uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948 this can do it nicely. Signed-off-by: Anton Arapov <anton@deadbeef.mx>
2021-04-03 12:58:10 +02:00 · 2021-04-03 12:58:10 +02:00 · 56de2bcd43
commit 56de2bcd43
30691 changed files with 3076956 additions and 0 deletions
--- a/pkgs/os-specific/bsd/netbsd/compat-cxx-safe-header.patch
+++ b/pkgs/os-specific/bsd/netbsd/compat-cxx-safe-header.patch
@ -0,0 +1,18 @@
+diff -u -r1.35.2.1 nbtool_config.h.in
+--- a/nbtool_config.h.in	22 Apr 2015 07:18:58 -0000	1.35.2.1
+++ b/nbtool_config.h.in	31 May 2018 01:46:53 -0000
+@@ -680,5 +680,14 @@
+ /* Define if you have u_int8_t, but not uint8_t. */
+ #undef uint8_t
+ 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+ #include "compat_defs.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+ #endif /* !__NETBSD_NBTOOL_CONFIG_H__ */
--- a/pkgs/os-specific/bsd/netbsd/compat-dont-configure-twice.patch
+++ b/pkgs/os-specific/bsd/netbsd/compat-dont-configure-twice.patch
@ -0,0 +1,22 @@
+commit f2d0ff85e05b49e9d11735ce4810b242c1dbf5af
+Author: John Ericson <John.Ericson@Obsidian.Systems>
+Date:   Wed Sep 1 15:38:56 2021 +0000
+
+    Make should not hit configure
+
+diff --git a/Makefile b/Makefile
+index b5adb8a5f2e9..1a914ef16739 100644
+--- a/Makefile
+++ b/Makefile
+@@ -76,11 +76,6 @@ _CURDIR:=	${.CURDIR}
+ 
+ SRCS:=		${SRCS:M*.c}
+ 
+-config.cache: include/.stamp configure nbtool_config.h.in defs.mk.in
+-	rm -f ${.TARGET}
+-	CC=${HOST_CC:Q} CFLAGS=${HOST_CFLAGS:Q} LDFLAGS=${HOST_LDFLAGS:Q} \
+-		${HOST_SH} ${.CURDIR}/configure --cache-file=config.cache
+-
+ defs.mk: config.cache
+ 	@touch ${.TARGET}
+ 
--- a/pkgs/os-specific/bsd/netbsd/compat-no-force-native.patch
+++ b/pkgs/os-specific/bsd/netbsd/compat-no-force-native.patch
@ -0,0 +1,101 @@
+commit 5acf3bdea5140e90135d15d6479f29fbf624f75e
+Author: John Ericson <John.Ericson@Obsidian.Systems>
+Date:   Wed Sep 1 15:38:56 2021 +0000
+
+    Don't force building and installing for the build platform
+    
+    Also remove `compat/` subdir from install directories.
+
+diff --git a/Makefile b/Makefile
+index 4bcf227f0e75..9ed1d6eea6ff 100644
+--- a/Makefile
+++ b/Makefile
+@@ -1,6 +1,6 @@
+ #	$NetBSD: Makefile,v 1.87 2019/05/08 02:25:50 thorpej Exp $
+ 
+-HOSTLIB=	nbcompat
+LIB=	nbcompat
+ 
+-.include <bsd.hostinit.mk>
+.include <bsd.own.mk>
+ 
+@@ -94,63 +94,37 @@ include/.stamp:
+ 
+ # Install rules
+ 
+-HOST_LIBDIR=	${TOOLDIR}/lib
+-HOST_INCSDIR=	${TOOLDIR}/include
+-HOST_SHAREDIR= ${TOOLDIR}/share
+-
+-install:	.PHONY install.lib includes install.defs.mk
+-
+-# Install lib${HOSTLIB}.a in ${TOOLDIR}/lib
+-install.lib: .PHONY ${HOST_LIBDIR}/lib${HOSTLIB}.a
+-${HOST_LIBDIR}/lib${HOSTLIB}.a: lib${HOSTLIB}.a
+-	${_MKTARGET_INSTALL}
+-	${HOST_INSTALL_DIR} ${HOST_LIBDIR}
+-	${HOST_INSTALL_FILE} -m ${LIBMODE} ${.ALLSRC} ${.TARGET}
+install:	.PHONY includes install.defs.mk
+ 
+ .for _f in ${INCFILES}
+-HOST_INCINSTFILES+= ${HOST_INCSDIR}/compat/${_f}
+-${HOST_INCSDIR}/compat/${_f}: ${_f}
+INCINSTFILES+= ${INCSDIR}/${_f}
+${INCSDIR}/${_f}: ${_f}
+ 	${_MKTARGET_INSTALL}
+-	${HOST_INSTALL_FILE} ${.ALLSRC} ${.TARGET}
+	${INSTALL_FILE} ${.ALLSRC} ${.TARGET}
+ .endfor
+ 
+ .for _d in ${INCSUBDIRS}
+-HOST_INCINSTDIRS+= ${HOST_INCSDIR}/compat/${_d}
+-${HOST_INCSDIR}/compat/${_d}:
+INCINSTDIRS+= ${INCSDIR}/${_d}
+${INCSDIR}/${_d}:
+ 	${_MKTARGET_INSTALL}
+-	${HOST_INSTALL_DIR} ${.TARGET}
+	${INSTALL_DIR} ${.TARGET}
+ .endfor
+ 
+-# Install include files in ${TOOLDIR}/include/compat
+-includes: .PHONY ${HOST_INCINSTDIRS} .WAIT ${HOST_INCINSTFILES}
+# Install include files in ${INCSDIR}
+includes: .PHONY ${INCINSTDIRS} .WAIT ${INCINSTFILES}
+ 	@(cd include && find . -name '*.h' -print | while read f ; do \
+-	    ${HOST_INSTALL_FILE} $$f ${HOST_INCSDIR}/compat/$$f ; \
+	    ${INSTALL_FILE} $$f ${INCSDIR}/$$f ; \
+ 	done)
+ 
+ 
+-# Install defs.mk in ${TOOLDIR}/share/compat
+-install.defs.mk: .PHONY ${HOST_SHAREDIR}/compat/defs.mk
+-${HOST_SHAREDIR}/compat/defs.mk: defs.mk
+# Install defs.mk in ${DATADIR}
+install.defs.mk: .PHONY ${DATADIR}/defs.mk
+${DATADIR}/defs.mk: defs.mk
+ 	${_MKTARGET_INSTALL}
+-	${HOST_INSTALL_DIR} ${HOST_SHAREDIR}
+-	${HOST_INSTALL_DIR} ${HOST_SHAREDIR}/compat
+-	${HOST_INSTALL_FILE} ${.ALLSRC} ${.TARGET}
+-
+-# bsd.hostlib.mk wants HOST_CPPFLAGS, not CPPFLAGS
+-
+-HOST_CPPFLAGS:=	${CPPFLAGS}
+-CPPFLAGS:=	# empty
+-
+-.include <bsd.hostlib.mk>
+-
+-# Use uninstalled copy of host-mkdep
+-HOST_MKDEP_OBJ!= cd ${.CURDIR}/../host-mkdep && ${PRINTOBJDIR}
+-HOST_MKDEP=	${HOST_MKDEP_OBJ}/host-mkdep
+-MKDEP=		${HOST_MKDEP}
+	${INSTALL_DIR} ${DATADIR}
+	${INSTALL_FILE} ${.ALLSRC} ${.TARGET}
+ 
+-# Use uninstalled copy of the install program
+-INSTALL_OBJ!=	cd ${NETBSDSRCDIR}/tools/binstall && ${PRINTOBJDIR}
+-INSTALL=	${INSTALL_OBJ}/xinstall
+.include <bsd.lib.mk>
+ 
+ # Run "${TOOLDIR}/bin/nbmake-${MACHINE} regen" by hand after editing
+ # configure.ac.  See more detailed instructions in configure.ac.
--- a/pkgs/os-specific/bsd/netbsd/compat-setup-hook.sh
+++ b/pkgs/os-specific/bsd/netbsd/compat-setup-hook.sh
@ -0,0 +1,5 @@
+# See pkgs/build-support/setup-hooks/role.bash
+getHostRole
+
+export NIX_LDFLAGS${role_post}+=" -lnbcompat"
+export NIX_CFLAGS_COMPILE${role_post}+=" -DHAVE_NBTOOL_CONFIG_H"
--- a/pkgs/os-specific/bsd/netbsd/default.nix
+++ b/pkgs/os-specific/bsd/netbsd/default.nix
@ -0,0 +1,999 @@
+{ stdenv, lib, stdenvNoCC
+, pkgsBuildBuild, pkgsBuildHost, pkgsBuildTarget, pkgsHostHost, pkgsTargetTarget
+, buildPackages, splicePackages, newScope
+, bsdSetupHook, makeSetupHook, fetchcvs, groff, mandoc, byacc, flex
+, zlib
+, writeText, symlinkJoin
+}:
+
+let
+  inherit (buildPackages.buildPackages) rsync;
+
+  fetchNetBSD = path: version: sha256: fetchcvs {
+    cvsRoot = ":pserver:anoncvs@anoncvs.NetBSD.org:/cvsroot";
+    module = "src/${path}";
+    inherit sha256;
+    tag = "netbsd-${lib.replaceStrings ["."] ["-"] version}-RELEASE";
+  };
+
+  netbsdSetupHook = makeSetupHook {
+    name = "netbsd-setup-hook";
+  } ./setup-hook.sh;
+
+  otherSplices = {
+    selfBuildBuild = pkgsBuildBuild.netbsd;
+    selfBuildHost = pkgsBuildHost.netbsd;
+    selfBuildTarget = pkgsBuildTarget.netbsd;
+    selfHostHost = pkgsHostHost.netbsd;
+    selfTargetTarget = pkgsTargetTarget.netbsd or {}; # might be missing
+  };
+
+  defaultMakeFlags = [
+    "MKSOFTFLOAT=${if stdenv.hostPlatform.gcc.float or (stdenv.hostPlatform.parsed.abi.float or "hard") == "soft"
+      then "yes"
+      else "no"}"
+  ];
+
+in lib.makeScopeWithSplicing
+  splicePackages
+  newScope
+  otherSplices
+  (_: {})
+  (_: {})
+  (self: let
+    inherit (self) mkDerivation;
+  in {
+
+  # Why do we have splicing and yet do `nativeBuildInputs = with self; ...`?
+  #
+  # We use `lib.makeScopeWithSplicing` because this should be used for all
+  # nested package sets which support cross, so the inner `callPackage` works
+  # correctly. But for the inline packages we don't bother to use
+  # `callPackage`.
+  #
+  # We still could have tried to `with` a big spliced packages set, but
+  # splicing is jank and causes a number of bootstrapping infinite recursions
+  # if one is not careful. Pulling deps out of the right package set directly
+  # side-steps splicing entirely and avoids those footguns.
+  #
+  # For non-bootstrap-critical packages, we might as well use `callPackage` for
+  # consistency with everything else, and maybe put in separate files too.
+
+  compatIfNeeded = lib.optional (!stdenvNoCC.hostPlatform.isNetBSD) self.compat;
+
+  mkDerivation = lib.makeOverridable (attrs: let
+    stdenv' = if attrs.noCC or false then stdenvNoCC else stdenv;
+  in stdenv'.mkDerivation ({
+    name = "${attrs.pname or (baseNameOf attrs.path)}-netbsd-${attrs.version}";
+    src = fetchNetBSD attrs.path attrs.version attrs.sha256;
+
+    extraPaths = [ ];
+
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal
+      install tsort lorder buildPackages.mandoc groff statHook rsync
+    ];
+    buildInputs = with self; compatIfNeeded;
+
+    HOST_SH = stdenv'.shell;
+
+    MACHINE_ARCH = {
+      i486 = "i386";
+      i586 = "i386";
+      i686 = "i386";
+    }.${stdenv'.hostPlatform.parsed.cpu.name}
+      or stdenv'.hostPlatform.parsed.cpu.name;
+
+    MACHINE = {
+      x86_64 = "amd64";
+      aarch64 = "evbarm64";
+      i486 = "i386";
+      i586 = "i386";
+      i686 = "i386";
+    }.${stdenv'.hostPlatform.parsed.cpu.name}
+      or stdenv'.hostPlatform.parsed.cpu.name;
+
+    BSD_PATH = attrs.path;
+
+    makeFlags = defaultMakeFlags;
+
+    strictDeps = true;
+
+    meta = with lib; {
+      maintainers = with maintainers; [ matthewbauer qyliss ];
+      platforms = platforms.unix;
+      license = licenses.bsd2;
+    };
+
+  } // lib.optionalAttrs stdenv'.hasCC {
+    # TODO should CC wrapper set this?
+    CPP = "${stdenv'.cc.targetPrefix}cpp";
+  } // lib.optionalAttrs stdenv'.isDarwin {
+    MKRELRO = "no";
+  } // lib.optionalAttrs (stdenv'.cc.isClang or false) {
+    HAVE_LLVM = lib.versions.major (lib.getVersion stdenv'.cc.cc);
+  } // lib.optionalAttrs (stdenv'.cc.isGNU or false) {
+    HAVE_GCC = lib.versions.major (lib.getVersion stdenv'.cc.cc);
+  } // lib.optionalAttrs (stdenv'.isx86_32) {
+    USE_SSP = "no";
+  } // lib.optionalAttrs (attrs.headersOnly or false) {
+    installPhase = "includesPhase";
+    dontBuild = true;
+  } // attrs // {
+    postPatch = lib.optionalString (!stdenv'.hostPlatform.isNetBSD) ''
+      # Files that use NetBSD-specific macros need to have nbtool_config.h
+      # included ahead of them on non-NetBSD platforms.
+      set +e
+      grep -Zlr "^__RCSID
+      ^__BEGIN_DECLS" | xargs -0r grep -FLZ nbtool_config.h |
+          xargs -0tr sed -i '0,/^#/s//#include <nbtool_config.h>\n\0/'
+      set -e
+    '' + attrs.postPatch or "";
+  }));
+
+  ##
+  ## START BOOTSTRAPPING
+  ##
+  makeMinimal = mkDerivation {
+    path = "tools/make";
+    sha256 = "0fh0nrnk18m613m5blrliq2aydciv51qhc0ihsj4k63incwbk90n";
+    version = "9.2";
+
+    buildInputs = with self; [];
+    nativeBuildInputs = with buildPackages.netbsd; [ bsdSetupHook netbsdSetupHook rsync ];
+
+    skipIncludesPhase = true;
+
+    postPatch = ''
+      patchShebangs configure
+      ${self.make.postPatch}
+    '';
+
+    buildPhase = ''
+      runHook preBuild
+
+      sh ./buildmake.sh
+
+      runHook postBuild
+    '';
+
+    installPhase = ''
+      runHook preInstall
+
+      install -D nbmake $out/bin/nbmake
+      ln -s $out/bin/nbmake $out/bin/make
+      mkdir -p $out/share
+      cp -r $BSDSRCDIR/share/mk $out/share/mk
+
+      runHook postInstall
+    '';
+
+    extraPaths = with self; [ make.src ] ++ make.extraPaths;
+  };
+
+  compat = mkDerivation (let
+    version = "9.2";
+    commonDeps = [ zlib ];
+  in {
+    path = "tools/compat";
+    sha256 = "1vsxg7136nlhc72vpa664vs22874xh7ila95nkmsd8crn3z3cyn0";
+    inherit version;
+
+    setupHooks = [
+      ../../../build-support/setup-hooks/role.bash
+      ./compat-setup-hook.sh
+    ];
+
+    preConfigure = ''
+      make include/.stamp configure nbtool_config.h.in defs.mk.in
+    '';
+
+    configurePlatforms = [ "build" "host" ];
+    configureFlags = [
+      "--cache-file=config.cache"
+    ] ++ lib.optionals stdenv.hostPlatform.isMusl [
+      # We include this header in our musl package only for legacy
+      # compatibility, and compat works fine without it (and having it
+      # know about sys/cdefs.h breaks packages like glib when built
+      # statically).
+      "ac_cv_header_sys_cdefs_h=no"
+    ];
+
+    nativeBuildInputs = with buildPackages.netbsd; commonDeps ++ [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal
+      rsync
+    ];
+
+    buildInputs = with self; commonDeps;
+
+    # temporarily use gnuinstall for bootstrapping
+    # bsdinstall will be built later
+    makeFlags = defaultMakeFlags ++ [
+      "INSTALL=${buildPackages.coreutils}/bin/install"
+      "DATADIR=$(out)/share"
+      # Can't sort object files yet
+      "LORDER=echo"
+      "TSORT=cat"
+      # Can't process man pages yet
+      "MKSHARE=no"
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
+      # GNU objcopy produces broken .a libs which won't link into dependers.
+      # Makefiles only invoke `$OBJCOPY -x/-X`, so cctools strip works here.
+      "OBJCOPY=${buildPackages.darwin.cctools}/bin/strip"
+    ];
+    RENAME = "-D";
+
+    passthru.tests = { netbsd-install = self.install; };
+
+    patches = [
+      ./compat-cxx-safe-header.patch
+      ./compat-dont-configure-twice.patch
+      ./compat-no-force-native.patch
+    ];
+
+    preInstall = ''
+      makeFlagsArray+=('INSTALL_FILE=''${INSTALL} ''${COPY} ''${PRESERVE} ''${RENAME}')
+      makeFlagsArray+=('INSTALL_DIR=''${INSTALL} -d')
+      makeFlagsArray+=('INSTALL_SYMLINK=''${INSTALL} ''${SYMLINK} ''${RENAME}')
+    '';
+
+    postInstall = ''
+      # why aren't these installed by netbsd?
+      install -D compat_defs.h $out/include/compat_defs.h
+      install -D $BSDSRCDIR/include/cdbw.h $out/include/cdbw.h
+      install -D $BSDSRCDIR/sys/sys/cdbr.h $out/include/cdbr.h
+      install -D $BSDSRCDIR/sys/sys/featuretest.h \
+                 $out/include/sys/featuretest.h
+      install -D $BSDSRCDIR/sys/sys/md5.h $out/include/md5.h
+      install -D $BSDSRCDIR/sys/sys/rmd160.h $out/include/rmd160.h
+      install -D $BSDSRCDIR/sys/sys/sha1.h $out/include/sha1.h
+      install -D $BSDSRCDIR/sys/sys/sha2.h $out/include/sha2.h
+      install -D $BSDSRCDIR/sys/sys/queue.h $out/include/sys/queue.h
+      install -D $BSDSRCDIR/include/vis.h $out/include/vis.h
+      install -D $BSDSRCDIR/include/db.h $out/include/db.h
+      install -D $BSDSRCDIR/include/netconfig.h $out/include/netconfig.h
+      install -D $BSDSRCDIR/include/utmpx.h $out/include/utmpx.h
+      install -D $BSDSRCDIR/include/tzfile.h $out/include/tzfile.h
+      install -D $BSDSRCDIR/sys/sys/tree.h $out/include/sys/tree.h
+      install -D $BSDSRCDIR/include/nl_types.h $out/include/nl_types.h
+      install -D $BSDSRCDIR/include/stringlist.h $out/include/stringlist.h
+
+      # Collapse includes slightly to fix dangling reference
+      install -D $BSDSRCDIR/common/include/rpc/types.h $out/include/rpc/types.h
+      sed -i '1s;^;#include "nbtool_config.h"\n;' $out/include/rpc/types.h
+   '' + lib.optionalString stdenv.isDarwin ''
+      mkdir -p $out/include/ssp
+      touch $out/include/ssp/ssp.h
+   '' + ''
+      mkdir -p $out/lib/pkgconfig
+      substitute ${./libbsd-overlay.pc} $out/lib/pkgconfig/libbsd-overlay.pc \
+        --subst-var-by out $out \
+        --subst-var-by version ${version}
+    '';
+    extraPaths = with self; [ include.src libc.src libutil.src
+      (fetchNetBSD "external/bsd/flex" "9.2" "0h98jpfj7vx5zh7vd7bk6b1hmzgkcb757a8j6d9zgygxxv13v43m")
+      (fetchNetBSD "sys/sys" "9.2" "0zawhw51klaigqqwkx0lzrx3mim2jywrc24cm7c66qsf1im9awgd")
+      (fetchNetBSD "common/include/rpc/types.h" "9.2" "0n2df12mlc3cbc48jxq35yzl1y7ghgpykvy7jnfh898rdhac7m9a")
+    ] ++ libutil.extraPaths ++ _mainLibcExtraPaths;
+  });
+
+  # HACK: to ensure parent directories exist. This emulates GNU
+  # install’s -D option. No alternative seems to exist in BSD install.
+  install = let binstall = writeText "binstall" ''
+    #!${stdenv.shell}
+    for last in $@; do true; done
+    mkdir -p $(dirname $last)
+    xinstall "$@"
+  ''; in mkDerivation {
+    path = "usr.bin/xinstall";
+    version = "9.2";
+    sha256 = "1f6pbz3qv1qcrchdxif8p5lbmnwl8b9nq615hsd3cyl4avd5bfqj";
+    extraPaths = with self; [ mtree.src make.src ];
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal
+      mandoc groff rsync
+    ];
+    skipIncludesPhase = true;
+    buildInputs = with self; compatIfNeeded ++ [ fts ];
+    installPhase = ''
+      runHook preInstall
+
+      install -D install.1 $out/share/man/man1/install.1
+      install -D xinstall $out/bin/xinstall
+      install -D -m 0550 ${binstall} $out/bin/binstall
+      ln -s $out/bin/binstall $out/bin/install
+
+      runHook postInstall
+    '';
+    setupHook = ./install-setup-hook.sh;
+  };
+
+  fts = mkDerivation {
+    pname = "fts";
+    path = "include/fts.h";
+    sha256 = "01d4fpxvz1pgzfk5xznz5dcm0x0gdzwcsfm1h3d0xc9kc6hj2q77";
+    version = "9.2";
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook rsync
+    ];
+    propagatedBuildInputs = with self; compatIfNeeded;
+    extraPaths = with self; [
+      (fetchNetBSD "lib/libc/gen/fts.c" "9.2" "1a8hmf26242nmv05ipn3ircxb0jqmmi66rh78kkyi9vjwkfl3qn7")
+      (fetchNetBSD "lib/libc/include/namespace.h" "9.2" "0kksr3pdwdc1cplqf5z12ih4cml6l11lqrz91f7hjjm64y7785kc")
+      (fetchNetBSD "lib/libc/gen/fts.3" "9.2" "1asxw0n3fhjdadwkkq3xplfgqgl3q32w1lyrvbakfa3gs0wz5zc1")
+    ];
+    skipIncludesPhase = true;
+    buildPhase = ''
+      "$CC" -c -Iinclude -Ilib/libc/include lib/libc/gen/fts.c \
+          -o lib/libc/gen/fts.o
+      "$AR" -rsc libfts.a lib/libc/gen/fts.o
+    '';
+    installPhase = ''
+      runHook preInstall
+
+      install -D lib/libc/gen/fts.3 $out/share/man/man3/fts.3
+      install -D include/fts.h $out/include/fts.h
+      install -D lib/libc/include/namespace.h $out/include/namespace.h
+      install -D libfts.a $out/lib/libfts.a
+
+      runHook postInstall
+    '';
+    setupHooks = [
+      ../../../build-support/setup-hooks/role.bash
+      ./fts-setup-hook.sh
+    ];
+  };
+
+  # Don't add this to nativeBuildInputs directly.  Use statHook instead.
+  stat = mkDerivation {
+    path = "usr.bin/stat";
+    version = "9.2";
+    sha256 = "18nqwlndfc34qbbgqx5nffil37jfq9aw663ippasfxd2hlyc106x";
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal
+      install mandoc groff rsync
+    ];
+  };
+
+  # stat isn't in POSIX, and NetBSD stat supports a completely
+  # different range of flags than GNU stat, so including it in PATH
+  # breaks stdenv.  Work around that with a hook that will point
+  # NetBSD's build system and NetBSD stat without including it in
+  # PATH.
+  statHook = makeSetupHook {
+    name = "netbsd-stat-hook";
+  } (writeText "netbsd-stat-hook-impl" ''
+    makeFlagsArray+=(TOOL_STAT=${self.stat}/bin/stat)
+  '');
+
+  tsort = mkDerivation {
+    path = "usr.bin/tsort";
+    version = "9.2";
+    sha256 = "1dqvf9gin29nnq3c4byxc7lfd062pg7m84843zdy6n0z63hnnwiq";
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal
+      install mandoc groff rsync
+    ];
+  };
+
+  lorder = mkDerivation {
+    path = "usr.bin/lorder";
+    version = "9.2";
+    sha256 = "0rjf9blihhm0n699vr2bg88m4yjhkbxh6fxliaay3wxkgnydjwn2";
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal
+      install mandoc groff rsync
+    ];
+  };
+  ##
+  ## END BOOTSTRAPPING
+  ##
+
+  ##
+  ## START COMMAND LINE TOOLS
+  ##
+  make = mkDerivation {
+    path = "usr.bin/make";
+    sha256 = "0vi73yicbmbp522qzqvd979cx6zm5jakhy77xh73c1kygf8klccs";
+    version = "9.2";
+
+   postPatch = ''
+     substituteInPlace $BSDSRCDIR/share/mk/bsd.doc.mk \
+       --replace '-o ''${DOCOWN}' "" \
+       --replace '-g ''${DOCGRP}' ""
+     for mk in $BSDSRCDIR/share/mk/bsd.inc.mk $BSDSRCDIR/share/mk/bsd.kinc.mk; do
+       substituteInPlace $mk \
+         --replace '-o ''${BINOWN}' "" \
+         --replace '-g ''${BINGRP}' ""
+     done
+     substituteInPlace $BSDSRCDIR/share/mk/bsd.kmodule.mk \
+       --replace '-o ''${KMODULEOWN}' "" \
+       --replace '-g ''${KMODULEGRP}' ""
+     substituteInPlace $BSDSRCDIR/share/mk/bsd.lib.mk \
+       --replace '-o ''${LIBOWN}' "" \
+       --replace '-g ''${LIBGRP}' "" \
+       --replace '-o ''${DEBUGOWN}' "" \
+       --replace '-g ''${DEBUGGRP}' ""
+     substituteInPlace $BSDSRCDIR/share/mk/bsd.lua.mk \
+       --replace '-o ''${LIBOWN}' "" \
+       --replace '-g ''${LIBGRP}' ""
+     substituteInPlace $BSDSRCDIR/share/mk/bsd.man.mk \
+       --replace '-o ''${MANOWN}' "" \
+       --replace '-g ''${MANGRP}' ""
+     substituteInPlace $BSDSRCDIR/share/mk/bsd.nls.mk \
+       --replace '-o ''${NLSOWN}' "" \
+       --replace '-g ''${NLSGRP}' ""
+     substituteInPlace $BSDSRCDIR/share/mk/bsd.prog.mk \
+       --replace '-o ''${BINOWN}' "" \
+       --replace '-g ''${BINGRP}' "" \
+       --replace '-o ''${RUMPBINOWN}' "" \
+       --replace '-g ''${RUMPBINGRP}' "" \
+       --replace '-o ''${DEBUGOWN}' "" \
+       --replace '-g ''${DEBUGGRP}' ""
+
+      # make needs this to pick up our sys make files
+      export NIX_CFLAGS_COMPILE+=" -D_PATH_DEFSYSPATH=\"$out/share/mk\""
+
+      substituteInPlace $BSDSRCDIR/share/mk/bsd.lib.mk \
+        --replace '_INSTRANLIB=''${empty(PRESERVE):?-a "''${RANLIB} -t":}' '_INSTRANLIB='
+      substituteInPlace $BSDSRCDIR/share/mk/bsd.kinc.mk \
+        --replace /bin/rm rm
+    '' + lib.optionalString stdenv.isDarwin ''
+      substituteInPlace $BSDSRCDIR/share/mk/bsd.sys.mk \
+        --replace '-Wl,--fatal-warnings' "" \
+        --replace '-Wl,--warn-shared-textrel' ""
+    '';
+    postInstall = ''
+      make -C $BSDSRCDIR/share/mk FILESDIR=$out/share/mk install
+    '';
+    extraPaths = [
+      (fetchNetBSD "share/mk" "9.2" "0w9x77cfnm6zwy40slradzi0ip9gz80x6lk7pvnlxzsr2m5ra5sy")
+    ];
+  };
+
+  mtree = mkDerivation {
+    path = "usr.sbin/mtree";
+    version = "9.2";
+    sha256 = "04p7w540vz9npvyb8g8hcf2xa05phn1y88hsyrcz3vwanvpc0yv9";
+    extraPaths = with self; [ mknod.src ];
+  };
+
+  mknod = mkDerivation {
+    path = "sbin/mknod";
+    version = "9.2";
+    sha256 = "1d9369shzwgixz3nph991i8q5vk7hr04py3n9avbfbhzy4gndqs2";
+  };
+
+  getent = mkDerivation {
+    path = "usr.bin/getent";
+    sha256 = "1qngywcmm0y7nl8h3n8brvkxq4jw63szbci3kc1q6a6ndhycbbvr";
+    version = "9.2";
+    patches = [ ./getent.patch ];
+  };
+
+  getconf = mkDerivation {
+    path = "usr.bin/getconf";
+    sha256 = "122vslz4j3h2mfs921nr2s6m078zcj697yrb75rwp2hnw3qz4s8q";
+    version = "9.2";
+  };
+
+  locale = mkDerivation {
+    path = "usr.bin/locale";
+    version = "9.2";
+    sha256 = "0kk6v9k2bygq0wf9gbinliqzqpzs9bgxn0ndyl2wcv3hh2bmsr9p";
+    patches = [ ./locale.patch ];
+    NIX_CFLAGS_COMPILE = "-DYESSTR=__YESSTR -DNOSTR=__NOSTR";
+  };
+
+  rpcgen = mkDerivation {
+    path = "usr.bin/rpcgen";
+    version = "9.2";
+    sha256 = "1kfgfx54jg98wbg0d95p0rvf4w0302v8fz724b0bdackdsrd4988";
+  };
+
+  genassym = mkDerivation {
+    path = "usr.bin/genassym";
+    version = "9.2";
+    sha256 = "1acl1dz5kvh9h5806vkz2ap95rdsz7phmynh5i3x5y7agbki030c";
+  };
+
+  gencat = mkDerivation {
+    path = "usr.bin/gencat";
+    version = "9.2";
+    sha256 = "0gd463x1hg36bhr7y0xryb5jyxk0z0g7xvy8rgk82nlbnlnsbbwb";
+  };
+
+  nbperf = mkDerivation {
+    path = "usr.bin/nbperf";
+    version = "9.2";
+    sha256 = "1nxc302vgmjhm3yqdivqyfzslrg0vjpbss44s74rcryrl19mma9r";
+  };
+
+  tic = mkDerivation {
+    path = "tools/tic";
+    version = "9.2";
+    sha256 = "092y7db7k4kh2jq8qc55126r5qqvlb8lq8mhmy5ipbi36hwb4zrz";
+    HOSTPROG = "tic";
+    buildInputs = with self; compatIfNeeded;
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal
+      install mandoc groff nbperf rsync
+    ];
+    makeFlags = defaultMakeFlags ++ [ "TOOLDIR=$(out)" ];
+    extraPaths = with self; [
+      libterminfo.src
+      (fetchNetBSD "usr.bin/tic" "9.2" "1mwdfg7yx1g43ss378qsgl5rqhsxskqvsd2mqvrn38qw54i8v5i1")
+      (fetchNetBSD "tools/Makefile.host" "9.2" "15b4ab0n36lqj00j5lz2xs83g7l8isk3wx1wcapbrn66qmzz2sxy")
+    ];
+  };
+
+  uudecode = mkDerivation {
+    path = "usr.bin/uudecode";
+    version = "9.2";
+    sha256 = "00a3zmh15pg4vx6hz0kaa5mi8d2b1sj4h512d7p6wbvxq6mznwcn";
+    NIX_CFLAGS_COMPILE = lib.optional stdenv.isLinux "-DNO_BASE64";
+  };
+
+  cksum = mkDerivation {
+    path = "usr.bin/cksum";
+    version = "9.2";
+    sha256 = "0msfhgyvh5c2jmc6qjnf12c378dhw32ffsl864qz4rdb2b98rfcq";
+    meta.platforms = lib.platforms.netbsd;
+  };
+
+  config = mkDerivation {
+    path = "usr.bin/config";
+    version = "9.2";
+    sha256 = "1yz3n4hncdkk6kp595fh2q5lg150vpqg8iw2dccydkyw4y3hgsjj";
+    NIX_CFLAGS_COMPILE = [ "-DMAKE_BOOTSTRAP" ];
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal install mandoc byacc flex rsync
+    ];
+    buildInputs = with self; compatIfNeeded;
+    extraPaths = with self; [ cksum.src ];
+  };
+  ##
+  ## END COMMAND LINE TOOLS
+  ##
+
+  ##
+  ## START HEADERS
+  ##
+  include = mkDerivation {
+    path = "include";
+    version = "9.2";
+    sha256 = "0nxnmj4c8s3hb9n3fpcmd0zl3l1nmhivqgi9a35sis943qvpgl9h";
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal
+      install mandoc groff rsync nbperf rpcgen
+    ];
+
+    # The makefiles define INCSDIR per subdirectory, so we have to set
+    # something else on the command line so those definitions aren't
+    # overridden.
+    postPatch = ''
+      find "$BSDSRCDIR" -name Makefile -exec \
+        sed -i -E \
+          -e 's_/usr/include_''${INCSDIR0}_' \
+          {} \;
+    '';
+
+    # multiple header dirs, see above
+    postConfigure = ''
+      makeFlags=''${makeFlags/INCSDIR/INCSDIR0}
+    '';
+
+    extraPaths = with self; [ common ];
+    headersOnly = true;
+    noCC = true;
+    meta.platforms = lib.platforms.netbsd;
+    makeFlags = defaultMakeFlags ++ [ "RPCGEN_CPP=${buildPackages.stdenv.cc.cc}/bin/cpp" ];
+  };
+
+  common = fetchNetBSD "common" "9.2" "1pfylz9r3ap5wnwwbwczbfjb1m5qdyspzbnmxmcdkpzz2zgj64b9";
+
+  sys-headers = mkDerivation {
+    pname = "sys-headers";
+    path = "sys";
+    version = "9.2";
+    sha256 = "03s18q8d9giipf05bx199fajc2qwikji0djz7hw63d2lya6bfnpj";
+
+    patches = [
+      # Fix this error when building bootia32.efi and bootx64.efi:
+      # error: PHDR segment not covered by LOAD segment
+      ./no-dynamic-linker.patch
+
+      # multiple header dirs, see above
+      ./sys-headers-incsdir.patch
+    ];
+
+    # multiple header dirs, see above
+    inherit (self.include) postPatch;
+
+    CONFIG = "GENERIC";
+
+    propagatedBuildInputs = with self; [ include ];
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal install tsort lorder statHook rsync uudecode config genassym
+    ];
+
+    postConfigure = ''
+      pushd arch/$MACHINE/conf
+      config $CONFIG
+      popd
+    ''
+      # multiple header dirs, see above
+      + self.include.postConfigure;
+
+    makeFlags = defaultMakeFlags ++ [ "FIRMWAREDIR=$(out)/libdata/firmware" ];
+    hardeningDisable = [ "pic" ];
+    MKKMOD = "no";
+    NIX_CFLAGS_COMPILE = [ "-Wa,--no-warn" ];
+
+    postBuild = ''
+      make -C arch/$MACHINE/compile/$CONFIG $makeFlags
+    '';
+
+    postInstall = ''
+      cp arch/$MACHINE/compile/$CONFIG/netbsd $out
+    '';
+
+    meta.platforms = lib.platforms.netbsd;
+    extraPaths = with self; [ common ];
+
+    installPhase = "includesPhase";
+    dontBuild = true;
+    noCC = true;
+  };
+
+  # The full kernel. We do the funny thing of overridding the headers to the
+  # full kernal and not vice versa to avoid infinite recursion -- the headers
+  # come earlier in the bootstrap.
+  sys = self.sys-headers.override {
+    pname = "sys";
+    installPhase = null;
+    noCC = false;
+    dontBuild = false;
+  };
+
+  headers = symlinkJoin {
+    name = "netbsd-headers-9.2";
+    paths = with self; [
+      include
+      sys-headers
+      libpthread-headers
+    ];
+    meta.platforms = lib.platforms.netbsd;
+  };
+  ##
+  ## END HEADERS
+  ##
+
+  ##
+  ## START LIBRARIES
+  ##
+  libutil = mkDerivation {
+    path = "lib/libutil";
+    version = "9.2";
+    sha256 = "02gm5a5zhh8qp5r5q5r7x8x6x50ir1i0ncgsnfwh1vnrz6mxbq7z";
+    extraPaths = with self; [ common libc.src sys.src ];
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal
+      byacc install tsort lorder mandoc statHook rsync
+    ];
+    buildInputs = with self; [ headers ];
+    SHLIBINSTALLDIR = "$(out)/lib";
+  };
+
+  libedit = mkDerivation {
+    path = "lib/libedit";
+    version = "9.2";
+    sha256 = "1wqhngraxwqk4jgrf5f18jy195yrp7c06n1gf31pbplq79mg1bcj";
+    buildInputs = with self; [ libterminfo libcurses ];
+    propagatedBuildInputs = with self; compatIfNeeded;
+    SHLIBINSTALLDIR = "$(out)/lib";
+    makeFlags = defaultMakeFlags ++ [ "LIBDO.terminfo=${self.libterminfo}/lib" ];
+    postPatch = ''
+      sed -i '1i #undef bool_t' el.h
+      substituteInPlace config.h \
+        --replace "#define HAVE_STRUCT_DIRENT_D_NAMLEN 1" ""
+      substituteInPlace readline/Makefile --replace /usr/include "$out/include"
+    '';
+    NIX_CFLAGS_COMPILE = [
+      "-D__noinline="
+      "-D__scanflike(a,b)="
+      "-D__va_list=va_list"
+    ];
+  };
+
+  libterminfo = mkDerivation {
+    path = "lib/libterminfo";
+    version = "9.2";
+    sha256 = "0pq05k3dj0dfsczv07frnnji92mazmy2qqngqbx2zgqc1x251414";
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal install tsort lorder mandoc statHook nbperf tic rsync
+    ];
+    buildInputs = with self; compatIfNeeded;
+    SHLIBINSTALLDIR = "$(out)/lib";
+    postPatch = ''
+      substituteInPlace term.c --replace /usr/share $out/share
+      substituteInPlace setupterm.c \
+        --replace '#include <curses.h>' 'void use_env(bool);'
+    '';
+    postBuild = ''
+      make -C $BSDSRCDIR/share/terminfo $makeFlags BINDIR=$out/share
+    '';
+    postInstall = ''
+      make -C $BSDSRCDIR/share/terminfo $makeFlags BINDIR=$out/share install
+    '';
+    extraPaths = with self; [
+      (fetchNetBSD "share/terminfo" "9.2" "1vh9rl4w8118a9qdpblfxmv1wkpm83rm9gb4rzz5bpm56i6d7kk7")
+    ];
+  };
+
+  libcurses = mkDerivation {
+    path = "lib/libcurses";
+    version = "9.2";
+    sha256 = "0pd0dggl3w4bv5i5h0s1wrc8hr66n4hkv3zlklarwfdhc692fqal";
+    buildInputs = with self; [ libterminfo ];
+    NIX_CFLAGS_COMPILE = [
+      "-D__scanflike(a,b)="
+      "-D__va_list=va_list"
+      "-D__warn_references(a,b)="
+    ] ++ lib.optional stdenv.isDarwin "-D__strong_alias(a,b)=";
+    propagatedBuildInputs = with self; compatIfNeeded;
+    MKDOC = "no"; # missing vfontedpr
+    makeFlags = defaultMakeFlags ++ [ "LIBDO.terminfo=${self.libterminfo}/lib" ];
+    postPatch = lib.optionalString (!stdenv.isDarwin) ''
+      substituteInPlace printw.c \
+        --replace "funopen(win, NULL, __winwrite, NULL, NULL)" NULL \
+        --replace "__strong_alias(vwprintw, vw_printw)" 'extern int vwprintw(WINDOW*, const char*, va_list) __attribute__ ((alias ("vw_printw")));'
+      substituteInPlace scanw.c \
+        --replace "__strong_alias(vwscanw, vw_scanw)" 'extern int vwscanw(WINDOW*, const char*, va_list) __attribute__ ((alias ("vw_scanw")));'
+    '';
+  };
+
+  column = mkDerivation {
+    path = "usr.bin/column";
+    version = "9.2";
+    sha256 = "0r6b0hjn5ls3j3sv6chibs44fs32yyk2cg8kh70kb4cwajs4ifyl";
+  };
+
+  libossaudio = mkDerivation {
+    path = "lib/libossaudio";
+    version = "9.2";
+    sha256 = "16l3bfy6dcwqnklvh3x0ps8ld1y504vf57v9rx8f9adzhb797jh0";
+    meta.platforms = lib.platforms.netbsd;
+  };
+
+  librpcsvc = mkDerivation {
+    path = "lib/librpcsvc";
+    version = "9.2";
+    sha256 = "1q34pfiyjbrgrdqm46jwrsqms49ly6z3b0xh1wg331zga900vq5n";
+    makeFlags = defaultMakeFlags ++ [ "INCSDIR=$(out)/include/rpcsvc" ];
+    meta.platforms = lib.platforms.netbsd;
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal
+      install tsort lorder rpcgen statHook
+    ];
+  };
+
+  librt = mkDerivation {
+    path = "lib/librt";
+    version = "9.2";
+    sha256 = "07f8mpjcqh5kig5z5sp97fg55mc4dz6aa1x5g01nv2pvbmqczxc6";
+    meta.platforms = lib.platforms.netbsd;
+    extraPaths = with self; [ libc.src ] ++ libc.extraPaths;
+    postPatch = ''
+      sed -i 's,/usr\(/include/sys/syscall.h\),${self.headers}\1,g' \
+        $BSDSRCDIR/lib/{libc,librt}/sys/Makefile.inc
+    '';
+  };
+
+  libcrypt = mkDerivation {
+    path = "lib/libcrypt";
+    version = "9.2";
+    sha256 = "0siqan1wdqmmhchh2n8w6a8x1abbff8n4yb6jrqxap3hqn8ay54g";
+    SHLIBINSTALLDIR = "$(out)/lib";
+    meta.platforms = lib.platforms.netbsd;
+  };
+
+  libpthread-headers = mkDerivation {
+    pname = "libpthread-headers";
+    path = "lib/libpthread";
+    version = "9.2";
+    sha256 = "0mlmc31k509dwfmx5s2x010wxjc44mr6y0cbmk30cfipqh8c962h";
+    installPhase = "includesPhase";
+    dontBuild = true;
+    noCC = true;
+    meta.platforms = lib.platforms.netbsd;
+  };
+
+  libpthread = self.libpthread-headers.override {
+    pname = "libpthread";
+    installPhase = null;
+    noCC = false;
+    dontBuild = false;
+    buildInputs = with self; [ headers ];
+    SHLIBINSTALLDIR = "$(out)/lib";
+    extraPaths = with self; [ common libc.src librt.src sys.src ];
+  };
+
+  libresolv = mkDerivation {
+    path = "lib/libresolv";
+    version = "9.2";
+    sha256 = "1am74s74mf1ynwz3p4ncjkg63f78a1zjm983q166x4sgzps15626";
+    meta.platforms = lib.platforms.netbsd;
+    extraPaths = with self; [ libc.src ];
+  };
+
+  libm = mkDerivation {
+    path = "lib/libm";
+    version = "9.2";
+    sha256 = "1apwfr26shdmbqqnmg7hxf7bkfxw44ynqnnnghrww9bnhqdnsy92";
+    SHLIBINSTALLDIR = "$(out)/lib";
+    meta.platforms = lib.platforms.netbsd;
+    extraPaths = with self; [ sys.src ];
+  };
+
+  i18n_module = mkDerivation {
+    path = "lib/i18n_module";
+    version = "9.2";
+    sha256 = "0w6y5v3binm7gf2kn7y9jja8k18rhnyl55cvvfnfipjqdxvxd9jd";
+    meta.platforms = lib.platforms.netbsd;
+    extraPaths = with self; [ libc.src ];
+  };
+
+  csu = mkDerivation {
+    path = "lib/csu";
+    version = "9.2";
+    sha256 = "0al5jfazvhlzn9hvmnrbchx4d0gm282hq5gp4xs2zmj9ycmf6d03";
+    meta.platforms = lib.platforms.netbsd;
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal
+      install mandoc groff flex
+      byacc genassym gencat lorder tsort statHook rsync
+    ];
+    buildInputs = with self; [ headers ];
+    extraPaths = with self; [ sys.src ld_elf_so.src ];
+  };
+
+  ld_elf_so = mkDerivation {
+    path  = "libexec/ld.elf_so";
+    version = "9.2";
+    sha256 = "0ia9mqzdljly0vqfwflm5mzz55k7qsr4rw2bzhivky6k30vgirqa";
+    meta.platforms = lib.platforms.netbsd;
+    LIBC_PIC = "${self.libc}/lib/libc_pic.a";
+    # Hack to prevent a symlink being installed here for compatibility.
+    SHLINKINSTALLDIR = "/usr/libexec";
+    USE_FORT = "yes";
+    makeFlags = defaultMakeFlags ++ [ "BINDIR=$(out)/libexec" "CLIBOBJ=${self.libc}/lib" ];
+    extraPaths = with self; [ libc.src ] ++ libc.extraPaths;
+  };
+
+  _mainLibcExtraPaths = with self; [
+      common i18n_module.src sys.src
+      ld_elf_so.src libpthread.src libm.src libresolv.src
+      librpcsvc.src libutil.src librt.src libcrypt.src
+  ];
+
+  libc = mkDerivation {
+    path = "lib/libc";
+    version = "9.2";
+    sha256 = "1y9c13igg0kai07sqvf9cm6yqmd8lhfd8hq3q7biilbgs1l99as3";
+    USE_FORT = "yes";
+    MKPROFILE = "no";
+    extraPaths = with self; _mainLibcExtraPaths ++ [
+      (fetchNetBSD "external/bsd/jemalloc" "9.2" "0cq704swa0h2yxv4gc79z2lwxibk9k7pxh3q5qfs7axx3jx3n8kb")
+    ];
+    nativeBuildInputs = with buildPackages.netbsd; [
+      bsdSetupHook netbsdSetupHook
+      makeMinimal
+      install mandoc groff flex
+      byacc genassym gencat lorder tsort statHook rsync rpcgen
+    ];
+    buildInputs = with self; [ headers csu ];
+    NIX_CFLAGS_COMPILE = "-B${self.csu}/lib";
+    meta.platforms = lib.platforms.netbsd;
+    SHLIBINSTALLDIR = "$(out)/lib";
+    MKPICINSTALL = "yes";
+    NLSDIR = "$(out)/share/nls";
+    makeFlags = defaultMakeFlags ++ [ "FILESDIR=$(out)/var/db"];
+    postInstall = ''
+      pushd ${self.headers}
+      find . -type d -exec mkdir -p $out/\{} \;
+      find . \( -type f -o -type l \) -exec cp -pr \{} $out/\{} \;
+      popd
+
+      pushd ${self.csu}
+      find . -type d -exec mkdir -p $out/\{} \;
+      find . \( -type f -o -type l \) -exec cp -pr \{} $out/\{} \;
+      popd
+
+      NIX_CFLAGS_COMPILE+=" -B$out/lib"
+      NIX_CFLAGS_COMPILE+=" -I$out/include"
+      NIX_LDFLAGS+=" -L$out/lib"
+
+      make -C $BSDSRCDIR/lib/libpthread $makeFlags
+      make -C $BSDSRCDIR/lib/libpthread $makeFlags install
+
+      make -C $BSDSRCDIR/lib/libm $makeFlags
+      make -C $BSDSRCDIR/lib/libm $makeFlags install
+
+      make -C $BSDSRCDIR/lib/libresolv $makeFlags
+      make -C $BSDSRCDIR/lib/libresolv $makeFlags install
+
+      make -C $BSDSRCDIR/lib/librpcsvc $makeFlags
+      make -C $BSDSRCDIR/lib/librpcsvc $makeFlags install
+
+      make -C $BSDSRCDIR/lib/i18n_module $makeFlags
+      make -C $BSDSRCDIR/lib/i18n_module $makeFlags install
+
+      make -C $BSDSRCDIR/lib/libutil $makeFlags
+      make -C $BSDSRCDIR/lib/libutil $makeFlags install
+
+      make -C $BSDSRCDIR/lib/librt $makeFlags
+      make -C $BSDSRCDIR/lib/librt $makeFlags install
+
+      make -C $BSDSRCDIR/lib/libcrypt $makeFlags
+      make -C $BSDSRCDIR/lib/libcrypt $makeFlags install
+    '';
+    inherit (self.librt) postPatch;
+  };
+  #
+  # END LIBRARIES
+  #
+
+  #
+  # START MISCELLANEOUS
+  #
+  dict = mkDerivation {
+    path = "share/dict";
+    noCC = true;
+    version = "9.2";
+    sha256 = "0svfc0byk59ri37pyjslv4c4rc7zw396r73mr593i78d39q5g3ad";
+    makeFlags = defaultMakeFlags ++ [ "BINDIR=$(out)/share" ];
+  };
+
+  misc = mkDerivation {
+    path = "share/misc";
+    noCC = true;
+    version = "9.2";
+    sha256 = "1j2cdssdx6nncv8ffj7f7ybl7m9hadjj8vm8611skqdvxnjg6nbc";
+    makeFlags = defaultMakeFlags ++ [ "BINDIR=$(out)/share" ];
+  };
+
+  man = mkDerivation {
+    path = "share/man";
+    noCC = true;
+    version = "9.2";
+    sha256 = "1l4lmj4kmg8dl86x94sr45w0xdnkz8dn4zjx0ipgr9bnq98663zl";
+    # man0 generates a man.pdf using ps2pdf, but doesn't install it later,
+    # so we can avoid the dependency on ghostscript
+    postPatch = ''
+      substituteInPlace man0/Makefile --replace "ps2pdf" "echo noop "
+    '';
+    makeFlags = defaultMakeFlags ++ [
+      "FILESDIR=$(out)/share"
+      "MKRUMP=no" # would require to have additional path sys/rump/share/man
+    ];
+  };
+  #
+  # END MISCELLANEOUS
+  #
+
+})
--- a/pkgs/os-specific/bsd/netbsd/fts-setup-hook.sh
+++ b/pkgs/os-specific/bsd/netbsd/fts-setup-hook.sh
@ -0,0 +1,4 @@
+# See pkgs/build-support/setup-hooks/role.bash
+getHostRole
+
+export NIX_LDFLAGS${role_post}+=" -lfts"
--- a/pkgs/os-specific/bsd/netbsd/getent.patch
+++ b/pkgs/os-specific/bsd/netbsd/getent.patch
@ -0,0 +1,455 @@
+Author: Matthew Bauer
+Description: Remove unavailable getent databases
+Version: 7.1.2
+--- a/getent.c	2018-04-16 13:33:49.000000000 -0500
+++ b/getent.c	2018-04-16 13:29:30.000000000 -0500
+@@ -42,7 +42,6 @@
+ #include <grp.h>
+ #include <limits.h>
+ #include <netdb.h>
+-#include <netgroup.h>
+ #include <pwd.h>
+ #include <stdio.h>
+ #include <stdarg.h>
+@@ -57,27 +56,16 @@
+ #include <arpa/nameser.h>
+ 
+ #include <net/if.h>
+-#include <net/if_ether.h>
+ 
+ #include <netinet/in.h>		/* for INET6_ADDRSTRLEN */
+ 
+-#include <rpc/rpcent.h>
+-
+-#include <disktab.h>
+-
+ static int	usage(void) __attribute__((__noreturn__));
+ static int	parsenum(const char *, unsigned long *);
+-static int	disktab(int, char *[]);
+-static int	gettytab(int, char *[]);
+-static int	ethers(int, char *[]);
+ static int	group(int, char *[]);
+ static int	hosts(int, char *[]);
+-static int	netgroup(int, char *[]);
+ static int	networks(int, char *[]);
+ static int	passwd(int, char *[]);
+-static int	printcap(int, char *[]);
+ static int	protocols(int, char *[]);
+-static int	rpc(int, char *[]);
+ static int	services(int, char *[]);
+ static int	shells(int, char *[]);
+ 
+@@ -92,17 +80,11 @@
+ 	const char	*name;
+ 	int		(*callback)(int, char *[]);
+ } databases[] = {
+-	{	"disktab",	disktab,	},
+-	{	"ethers",	ethers,		},
+-	{	"gettytab",	gettytab,	},
+ 	{	"group",	group,		},
+ 	{	"hosts",	hosts,		},
+-	{	"netgroup",	netgroup,	},
+ 	{	"networks",	networks,	},
+ 	{	"passwd",	passwd,		},
+-	{	"printcap",	printcap,	},
+ 	{	"protocols",	protocols,	},
+-	{	"rpc",		rpc,		},
+ 	{	"services",	services,	},
+ 	{	"shells",	shells,		},
+ 
+@@ -195,49 +177,6 @@
+ 	(void)printf("\n");
+ }
+ 
+-
+-		/*
+-		 * ethers
+-		 */
+-
+-static int
+-ethers(int argc, char *argv[])
+-{
+-	char		hostname[MAXHOSTNAMELEN + 1], *hp;
+-	struct ether_addr ea, *eap;
+-	int		i, rv;
+-
+-	assert(argc > 1);
+-	assert(argv != NULL);
+-
+-#define ETHERSPRINT	(void)printf("%-17s  %s\n", ether_ntoa(eap), hp)
+-
+-	rv = RV_OK;
+-	if (argc == 2) {
+-		warnx("Enumeration not supported on ethers");
+-		rv = RV_NOENUM;
+-	} else {
+-		for (i = 2; i < argc; i++) {
+-			if ((eap = ether_aton(argv[i])) == NULL) {
+-				eap = &ea;
+-				hp = argv[i];
+-				if (ether_hostton(hp, eap) != 0) {
+-					rv = RV_NOTFOUND;
+-					break;
+-				}
+-			} else {
+-				hp = hostname;
+-				if (ether_ntohost(hp, eap) != 0) {
+-					rv = RV_NOTFOUND;
+-					break;
+-				}
+-			}
+-			ETHERSPRINT;
+-		}
+-	}
+-	return rv;
+-}
+-
+ 		/*
+ 		 * group
+ 		 */
+@@ -298,7 +237,7 @@
+ hosts(int argc, char *argv[])
+ {
+ 	struct hostent	*he;
+-	char		addr[IN6ADDRSZ];
+	char		addr[NS_IN6ADDRSZ];
+ 	int		i, rv;
+ 
+ 	assert(argc > 1);
+@@ -312,9 +251,9 @@
+ 	} else {
+ 		for (i = 2; i < argc; i++) {
+ 			if (inet_pton(AF_INET6, argv[i], (void *)addr) > 0)
+-				he = gethostbyaddr(addr, IN6ADDRSZ, AF_INET6);
+				he = gethostbyaddr(addr, NS_IN6ADDRSZ, AF_INET6);
+ 			else if (inet_pton(AF_INET, argv[i], (void *)addr) > 0)
+-				he = gethostbyaddr(addr, INADDRSZ, AF_INET);
+				he = gethostbyaddr(addr, NS_INADDRSZ, AF_INET);
+ 			else
+ 				he = gethostbyname(argv[i]);
+ 			if (he != NULL)
+@@ -330,48 +269,6 @@
+ }
+ 
+ 		/*
+-		 * netgroup
+-		 */
+-static int
+-netgroup(int argc, char *argv[])
+-{
+-	int		rv, i;
+-	bool		first;
+-	const char	*host, *user, *domain;
+-
+-	assert(argc > 1);
+-	assert(argv != NULL);
+-
+-#define NETGROUPPRINT(s)	(((s) != NULL) ? (s) : "")
+-
+-	rv = RV_OK;
+-	if (argc == 2) {
+-		warnx("Enumeration not supported on netgroup");
+-		rv = RV_NOENUM;
+-	} else {
+-		for (i = 2; i < argc; i++) {
+-			setnetgrent(argv[i]);
+-			first = true;
+-			while (getnetgrent(&host, &user, &domain) != 0) {
+-				if (first) {
+-					first = false;
+-					(void)fputs(argv[i], stdout);
+-				}
+-				(void)printf(" (%s,%s,%s)",
+-				    NETGROUPPRINT(host),
+-				    NETGROUPPRINT(user),
+-				    NETGROUPPRINT(domain));
+-			}
+-			if (!first)
+-				(void)putchar('\n');
+-			endnetgrent();
+-		}
+-	}
+-
+-	return rv;
+-}
+-
+-		/*
+ 		 * networks
+ 		 */
+ 
+@@ -464,227 +361,6 @@
+ 	return rv;
+ }
+ 
+-static char *
+-mygetent(const char * const * db_array, const char *name)
+-{
+-	char *buf = NULL;
+-	int error;
+-
+-	switch (error = cgetent(&buf, db_array, name)) {
+-	case -3:
+-		warnx("tc= loop in record `%s' in `%s'", name, db_array[0]);
+-		break;
+-	case -2:
+-		warn("system error fetching record `%s' in `%s'", name,
+-		    db_array[0]);
+-		break;
+-	case -1:
+-	case 0:
+-		break;
+-	case 1:
+-		warnx("tc= reference not found in record for `%s' in `%s'",
+-		    name, db_array[0]);
+-		break;
+-	default:
+-		warnx("unknown error %d in record `%s' in `%s'", error, name,
+-		    db_array[0]);
+-		break;
+-	}
+-	return buf;
+-}
+-
+-static char *
+-mygetone(const char * const * db_array, int first)
+-{
+-	char *buf = NULL;
+-	int error;
+-
+-	switch (error = (first ? cgetfirst : cgetnext)(&buf, db_array)) {
+-	case -2:
+-		warnx("tc= loop in `%s'", db_array[0]);
+-		break;
+-	case -1:
+-		warn("system error fetching record in `%s'", db_array[0]);
+-		break;
+-	case 0:
+-	case 1:
+-		break;
+-	case 2:
+-		warnx("tc= reference not found in `%s'", db_array[0]);
+-		break;
+-	default:
+-		warnx("unknown error %d in `%s'", error, db_array[0]);
+-		break;
+-	}
+-	return buf;
+-}
+-
+-static void
+-capprint(const char *cap)
+-{
+-	char *c = strchr(cap, ':');
+-	if (c)
+-		if (c == cap)
+-			(void)printf("true\n");
+-		else {
+-			int l = (int)(c - cap);
+-			(void)printf("%*.*s\n", l, l, cap);
+-		}
+-	else
+-		(void)printf("%s\n", cap);
+-}
+-
+-static void
+-prettyprint(char *b)
+-{
+-#define TERMWIDTH 65
+-	int did = 0;
+-	size_t len;
+-	char *s, c;
+-
+-	for (;;) {
+-		len = strlen(b);
+-		if (len <= TERMWIDTH) {
+-done:
+-			if (did)
+-				printf("\t:");
+-			printf("%s\n", b);
+-			return;
+-		}
+-		for (s = b + TERMWIDTH; s > b && *s != ':'; s--)
+-			continue;
+-		if (*s++ != ':')
+-			goto done;
+-		c = *s;
+-		*s = '\0';
+-		if (did)
+-			printf("\t:");
+-		did++;
+-		printf("%s\\\n", b);
+-		*s = c;
+-		b = s;
+-	}
+-}
+-
+-static void
+-handleone(const char * const *db_array, char *b, int recurse, int pretty,
+-    int level)
+-{
+-	char *tc;
+-
+-	if (level && pretty)
+-		printf("\n");
+-	if (pretty)
+-		prettyprint(b);
+-	else
+-		printf("%s\n", b);
+-	if (!recurse || cgetstr(b, "tc", &tc) <= 0)
+-		return;
+-
+-	b = mygetent(db_array, tc);
+-	free(tc);
+-
+-	if (b == NULL)
+-		return;
+-
+-	handleone(db_array, b, recurse, pretty, ++level);
+-	free(b);
+-}
+-
+-static int
+-handlecap(const char *db, int argc, char *argv[])
+-{
+-	static const char sfx[] = "=#:";
+-	const char *db_array[] = { db, NULL };
+-	char	*b, *cap;
+-	int	i, rv, c;
+-	size_t	j;
+-	int	expand = 1, recurse = 0, pretty = 0;
+-
+-	assert(argc > 1);
+-	assert(argv != NULL);
+-
+-	argc--;
+-	argv++;
+-	while ((c = getopt(argc, argv, "pnr")) != -1)
+-		switch (c) {
+-		case 'n':
+-			expand = 0;
+-			break;
+-		case 'r':
+-			expand = 0;
+-			recurse = 1;
+-			break;
+-		case 'p':
+-			pretty = 1;
+-			break;
+-		default:
+-			usage();
+-			break;
+-		}
+-
+-	argc -= optind;
+-	argv += optind;
+-	csetexpandtc(expand);
+-	rv = RV_OK;
+-	if (argc == 0) {
+-		for (b = mygetone(db_array, 1); b; b = mygetone(db_array, 0)) {
+-			handleone(db_array, b, recurse, pretty, 0);
+-			free(b);
+-		}
+-	} else {
+-		if ((b = mygetent(db_array, argv[0])) == NULL)
+-			return RV_NOTFOUND;
+-		if (argc == 1)
+-			handleone(db_array, b, recurse, pretty, 0);
+-		else {
+-			for (i = 2; i < argc; i++) {
+-				for (j = 0; j < sizeof(sfx) - 1; j++) {
+-					cap = cgetcap(b, argv[i], sfx[j]);
+-					if (cap) {
+-						capprint(cap);
+-						break;
+-					} 
+-				}
+-				if (j == sizeof(sfx) - 1)
+-					printf("false\n");
+-			}
+-		}
+-		free(b);
+-	}
+-	return rv;
+-}
+-
+-		/*
+-		 * gettytab
+-		 */
+-
+-static int
+-gettytab(int argc, char *argv[])
+-{
+-	return handlecap(_PATH_GETTYTAB, argc, argv);
+-}
+-
+-		/*
+-		 * printcap
+-		 */
+-
+-static int
+-printcap(int argc, char *argv[])
+-{
+-	return handlecap(_PATH_PRINTCAP, argc, argv);
+-}
+-
+-		/*
+-		 * disktab
+-		 */
+-
+-static int
+-disktab(int argc, char *argv[])
+-{
+-	return handlecap(_PATH_DISKTAB, argc, argv);
+-}
+-
+ 		/*
+ 		 * protocols
+ 		 */
+@@ -726,47 +402,6 @@
+ }
+ 
+ 		/*
+-		 * rpc
+-		 */
+-
+-static int
+-rpc(int argc, char *argv[])
+-{
+-	struct rpcent	*re;
+-	unsigned long	id;
+-	int		i, rv;
+-	
+-	assert(argc > 1);
+-	assert(argv != NULL);
+-
+-#define RPCPRINT	printfmtstrings(re->r_aliases, "  ", " ", \
+-				"%-16s  %6d", \
+-				re->r_name, re->r_number)
+-
+-	setrpcent(1);
+-	rv = RV_OK;
+-	if (argc == 2) {
+-		while ((re = getrpcent()) != NULL)
+-			RPCPRINT;
+-	} else {
+-		for (i = 2; i < argc; i++) {
+-			if (parsenum(argv[i], &id))
+-				re = getrpcbynumber((int)id);
+-			else
+-				re = getrpcbyname(argv[i]);
+-			if (re != NULL)
+-				RPCPRINT;
+-			else {
+-				rv = RV_NOTFOUND;
+-				break;
+-			}
+-		}
+-	}
+-	endrpcent();
+-	return rv;
+-}
+-
+-		/*
+ 		 * services
+ 		 */
+ 
--- a/pkgs/os-specific/bsd/netbsd/install-setup-hook.sh
+++ b/pkgs/os-specific/bsd/netbsd/install-setup-hook.sh
@ -0,0 +1,8 @@
+addNetBSDInstallMakeFlags() {
+  export INSTALL_FILE="install -U -c"
+  export INSTALL_DIR="install -U -d"
+  export INSTALL_LINK="install -U -l h"
+  export INSTALL_SYMLINK="install -U -l s"
+}
+
+preConfigureHooks+=(addNetBSDInstallMakeFlags)
--- a/pkgs/os-specific/bsd/netbsd/libbsd-overlay.pc
+++ b/pkgs/os-specific/bsd/netbsd/libbsd-overlay.pc
@ -0,0 +1,11 @@
+prefix=@out@
+exec_prefix=${prefix}
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include
+
+Name: nbcompat
+Description: NetBSD compatibility framework
+Version: @version@
+URL: https://www.netbsd.org/
+Libs: -L${libdir} -lnbcompat
+Cflags: -I${includedir} -DHAVE_NBTOOL_CONFIG_H -include nbtool_config.h
--- a/pkgs/os-specific/bsd/netbsd/locale.patch
+++ b/pkgs/os-specific/bsd/netbsd/locale.patch
@ -0,0 +1,85 @@
+--- a/locale.c	2018-06-11 14:39:06.449762000 -0400
+++ b/locale.c	2018-06-11 14:42:28.461122899 -0400
+@@ -56,14 +56,8 @@
+ #include <stringlist.h>
+ #include <unistd.h>
+ 
+-#include "citrus_namespace.h"
+-#include "citrus_region.h"
+-#include "citrus_lookup.h"
+-#include "setlocale_local.h"
+-
+ /* Local prototypes */
+ void	init_locales_list(void);
+-void	init_locales_list_alias(void);
+ void	list_charmaps(void);
+ void	list_locales(void);
+ const char *lookup_localecat(int);
+@@ -221,6 +215,8 @@
+ };
+ #define NKWINFO (sizeof(kwinfo)/sizeof(kwinfo[0]))
+ 
+const char *_PathLocale = NULL;
+
+ int
+ main(int argc, char *argv[])
+ {
+@@ -411,8 +407,7 @@
+ 	while ((dp = readdir(dirp)) != NULL) {
+ 		/* exclude "." and "..", _LOCALE_ALIAS_NAME */
+ 		if ((dp->d_name[0] != '.' || (dp->d_name[1] != '\0' &&
+-		    (dp->d_name[1] != '.' ||  dp->d_name[2] != '\0'))) &&
+-		    strcmp(_LOCALE_ALIAS_NAME, dp->d_name) != 0) {
+		    (dp->d_name[1] != '.' ||  dp->d_name[2] != '\0')))) {
+ 			s = strdup(dp->d_name);
+ 			if (s == NULL)
+ 				err(1, "could not allocate memory");
+@@ -431,48 +426,10 @@
+ 	if (sl_find(locales, "C") == NULL)
+ 		sl_add(locales, "C");
+ 
+-	init_locales_list_alias();
+-
+ 	/* make output nicer, sort the list */
+ 	qsort(locales->sl_str, locales->sl_cur, sizeof(char *), scmp);
+ }
+ 
+-void
+-init_locales_list_alias(void)
+-{
+-	char aliaspath[PATH_MAX];
+-	struct _lookup *hlookup;
+-	struct _region key, dat;
+-	size_t n;
+-	char *s, *t;
+-
+-	_DIAGASSERT(locales != NULL);
+-	_DIAGASSERT(_PathLocale != NULL);
+-
+-	(void)snprintf(aliaspath, sizeof(aliaspath),
+-		"%s/" _LOCALE_ALIAS_NAME, _PathLocale);
+-
+-	if (_lookup_seq_open(&hlookup, aliaspath,
+-	    _LOOKUP_CASE_SENSITIVE) == 0) {
+-		while (_lookup_seq_next(hlookup, &key, &dat) == 0) {
+-			n = _region_size((const struct _region *)&key);
+-			s = _region_head((const struct _region *)&key);
+-			for (t = s; n > 0 && *s!= '/'; --n, ++s);
+-			n = (size_t)(s - t);
+-			s = malloc(n + 1);
+-			if (s == NULL)
+-				err(1, "could not allocate memory");
+-			memcpy(s, t, n);
+-			s[n] = '\0';
+-			if (sl_find(locales, s) == NULL)
+-				sl_add(locales, s);
+-			else
+-				free(s);
+-		}
+-		_lookup_seq_close(hlookup);
+-	}
+-}
+-
+ /*
+  * Show current locale status, depending on environment variables
+  */
--- a/pkgs/os-specific/bsd/netbsd/no-dynamic-linker.patch
+++ b/pkgs/os-specific/bsd/netbsd/no-dynamic-linker.patch
@ -0,0 +1,16 @@
+===================================================================
+RCS file: /ftp/cvs/cvsroot/src/sys/arch/i386/stand/efiboot/Makefile.efiboot,v
+rcsdiff: /ftp/cvs/cvsroot/src/sys/arch/i386/stand/efiboot/Makefile.efiboot,v: warning: Unknown phrases like `commitid ...;' are present.
+retrieving revision 1.16
+retrieving revision 1.17
+diff -u -p -r1.16 -r1.17
+--- sys/arch/i386/stand/efiboot/Makefile.efiboot	2019/09/13 02:19:45	1.16
+++ sys/arch/i386/stand/efiboot/Makefile.efiboot	2020/04/04 15:30:46	1.17
+@@ -41,6 +41,7 @@ BINMODE=444
+ .PATH:	${.CURDIR}/../../libsa
+ 
+ LDSCRIPT?= ${.CURDIR}/ldscript
+LDFLAGS+= --no-dynamic-linker --noinhibit-exec
+ LDFLAGS+= -nostdlib -T${LDSCRIPT} -Bsymbolic -shared -nocombreloc
+ CPPFLAGS+= -I$S -I${.CURDIR} -I${.CURDIR}/.. -I$S/lib/libsa
+ CPPFLAGS+= -I${.OBJDIR}
--- a/pkgs/os-specific/bsd/netbsd/setup-hook.sh
+++ b/pkgs/os-specific/bsd/netbsd/setup-hook.sh
@ -0,0 +1,15 @@
+mergeNetBSDSourceDir() {
+  # merge together all extra paths
+  # there should be a better way to do this
+  chmod -R u+w $BSDSRCDIR
+  for path in $extraPaths; do
+    rsync -Er --chmod u+w $path/ $BSDSRCDIR/
+  done
+}
+
+addNetBSDMakeFlags() {
+  makeFlags="INCSDIR=${!outputDev}/include $makeFlags"
+}
+
+postUnpackHooks+=(mergeNetBSDSourceDir)
+preConfigureHooks+=(addNetBSDMakeFlags)
--- a/pkgs/os-specific/bsd/netbsd/sys-headers-incsdir.patch
+++ b/pkgs/os-specific/bsd/netbsd/sys-headers-incsdir.patch
@ -0,0 +1,13 @@
+diff --git a/Makefile b/Makefile
+index 3f1e18dc659d..163362b82f94 100644
+--- a/Makefile
+++ b/Makefile
+@@ -2,6 +2,8 @@
+ 
+ .include <bsd.own.mk>
+ 
+INCSDIR= ${INCSDIR0}
+
+ SUBDIR=	altq arch compat dev fs miscfs \
+ 	net net80211 netatalk netbt netcan netipsec netinet netinet6 \
+         netmpls netsmb \
--- a/pkgs/os-specific/bsd/setup-hook.sh
+++ b/pkgs/os-specific/bsd/setup-hook.sh
@ -0,0 +1,109 @@
+# BSD makefiles should be able to detect this
+# but without they end up using gcc on Darwin stdenv
+addMakeFlags() {
+  export setOutputFlags=
+
+  export LIBCRT0=
+  export LIBCRTI=
+  export LIBCRTEND=
+  export LIBCRTBEGIN=
+  export LIBC=
+  export LIBUTIL=
+  export LIBSSL=
+  export LIBCRYPTO=
+  export LIBCRYPT=
+  export LIBCURSES=
+  export LIBTERMINFO=
+  export LIBM=
+  export LIBL=
+
+  export _GCC_CRTBEGIN=
+  export _GCC_CRTBEGINS=
+  export _GCC_CRTEND=
+  export _GCC_CRTENDS=
+  export _GCC_LIBGCCDIR=
+  export _GCC_CRTI=
+  export _GCC_CRTN=
+  export _GCC_CRTDIR=
+
+  # Definitions passed to share/mk/*.mk. Should be pretty simple -
+  # eventually maybe move it to a configure script.
+  export DESTDIR=
+  export USETOOLS=never
+  export NOCLANGERROR=yes
+  export NOGCCERROR=yes
+  export LEX=flex
+  export MKUNPRIVED=yes
+  export EXTERNAL_TOOLCHAIN=yes
+
+  makeFlags="MACHINE=$MACHINE $makeFlags"
+  makeFlags="MACHINE_ARCH=$MACHINE_ARCH $makeFlags"
+  makeFlags="AR=$AR $makeFlags"
+  makeFlags="CC=$CC $makeFlags"
+  makeFlags="CPP=$CPP $makeFlags"
+  makeFlags="CXX=$CXX $makeFlags"
+  makeFlags="LD=$LD $makeFlags"
+  makeFlags="STRIP=$STRIP $makeFlags"
+
+  makeFlags="BINDIR=${!outputBin}/bin $makeFlags"
+  makeFlags="LIBDIR=${!outputLib}/lib $makeFlags"
+  makeFlags="SHLIBDIR=${!outputLib}/lib $makeFlags"
+  makeFlags="MANDIR=${!outputMan}/share/man $makeFlags"
+  makeFlags="INFODIR=${!outputInfo}/share/info $makeFlags"
+  makeFlags="DOCDIR=${!outputDoc}/share/doc $makeFlags"
+  makeFlags="LOCALEDIR=${!outputLib}/share/locale $makeFlags"
+
+  # Parallel building. Needs the space.
+  makeFlags="-j $NIX_BUILD_CORES $makeFlags"
+}
+
+setBSDSourceDir() {
+  sourceRoot=$PWD/$sourceRoot
+  export BSDSRCDIR=$sourceRoot
+  export _SRC_TOP_=$BSDSRCDIR
+
+  cd $sourceRoot
+  if [ -d "$BSD_PATH" ]
+    then sourceRoot=$sourceRoot/$BSD_PATH
+  fi
+}
+
+includesPhase() {
+  if [ -z "${skipIncludesPhase:-}" ]; then
+    runHook preIncludes
+
+    local flagsArray=(
+         $makeFlags ${makeFlagsArray+"${makeFlagsArray[@]}"}
+         includes
+    )
+
+    echoCmd 'includes flags' "${flagsArray[@]}"
+    make ${makefile:+-f $makefile} "${flagsArray[@]}"
+
+    moveUsrDir
+
+    runHook postIncludes
+  fi
+}
+
+moveUsrDir() {
+  if [ -d $prefix ]; then
+    # Remove lingering /usr references
+    if [ -d $prefix/usr ]; then
+      # Didn't try using rsync yet because per
+      # https://unix.stackexchange.com/questions/127712/merging-folders-with-mv,
+      # it's not neessarily better.
+      pushd $prefix/usr
+      find . -type d -exec mkdir -p $out/\{} \;
+      find . \( -type f -o -type l \) -exec mv \{} $out/\{} \;
+      popd
+    fi
+
+    find $prefix -type d -empty -delete
+  fi
+}
+
+postUnpackHooks+=(setBSDSourceDir)
+preConfigureHooks+=(addMakeFlags)
+preInstallHooks+=(includesPhase)
+fixupOutputHooks+=(moveUsrDir)
--- a/pkgs/os-specific/darwin/CoreSymbolication/default.nix
+++ b/pkgs/os-specific/darwin/CoreSymbolication/default.nix
@ -0,0 +1,19 @@
+{ fetchFromGitHub, stdenv }:
+
+# Reverse engineered CoreSymbolication to make dtrace buildable
+
+stdenv.mkDerivation rec {
+  name = "CoreSymbolication";
+
+  src = fetchFromGitHub {
+    repo = name;
+    owner = "matthewbauer";
+    rev = "671fcb66c82eac1827f3f53dc4cc4e9b1b94da0a";
+    sha256 = "0qpw46gwgjxiwqqjxksb8yghp2q8dwad6hzaf4zl82xpvk9n5ahj";
+  };
+
+  installPhase = ''
+    mkdir -p $out/include
+    cp -r CoreSymbolication $out/include
+  '';
+}
--- a/pkgs/os-specific/darwin/DarwinTools/default.nix
+++ b/pkgs/os-specific/darwin/DarwinTools/default.nix
@ -0,0 +1,36 @@
+{ lib, stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  pname = "DarwinTools";
+  version = "1";
+
+  src = fetchurl {
+    url = "https://opensource.apple.com/tarballs/DarwinTools/DarwinTools-${version}.tar.gz";
+    sha256 = "0hh4jl590jv3v830p77r3jcrnpndy7p2b8ajai3ldpnx2913jfhp";
+  };
+
+  patches = [
+    ./sw_vers-CFPriv.patch
+  ];
+
+  postPatch = ''
+    substituteInPlace Makefile \
+      --replace gcc cc
+  '';
+
+  configurePhase = ''
+    export SRCROOT=.
+    export SYMROOT=.
+    export DSTROOT=$out
+  '';
+
+  postInstall = ''
+    mv $out/usr/* $out
+    rmdir $out/usr
+  '';
+
+  meta = {
+    maintainers = [ lib.maintainers.matthewbauer ];
+    platforms = lib.platforms.darwin;
+  };
+}
--- a/pkgs/os-specific/darwin/DarwinTools/sw_vers-CFPriv.patch
+++ b/pkgs/os-specific/darwin/DarwinTools/sw_vers-CFPriv.patch
@ -0,0 +1,19 @@
+--- a/sw_vers.c	2021-04-19 13:06:50.131346864 +0900
+++ b/sw_vers.c	2021-04-19 13:07:32.481967474 +0900
+@@ -28,7 +28,15 @@
+  */
+ 
+ #include <CoreFoundation/CoreFoundation.h>
+-#include <CoreFoundation/CFPriv.h>
+
+// Avoid dependency on CoreFoundation/CFPriv, which no longer appears to be
+// part of the upstream sdk.
+
+CFDictionaryRef _CFCopyServerVersionDictionary(void);
+CFDictionaryRef _CFCopySystemVersionDictionary(void);
+extern CFStringRef _kCFSystemVersionProductNameKey;
+extern CFStringRef _kCFSystemVersionProductVersionKey;
+extern CFStringRef _kCFSystemVersionBuildVersionKey;
+ 
+ void usage(char *progname) {
+ 	fprintf(stderr, "Usage: %s [-productName|-productVersion|-buildVersion]\n", progname);
--- a/pkgs/os-specific/darwin/apple-sdk-11.0/apple_sdk.nix
+++ b/pkgs/os-specific/darwin/apple-sdk-11.0/apple_sdk.nix
@ -0,0 +1,181 @@
+{ lib, stdenvNoCC, buildPackages, fetchurl, xar, cpio, pkgs, python3, pbzx, MacOSX-SDK }:
+
+# TODO: reorganize to make this just frameworks, and move libs to default.nix
+
+let
+  stdenv = stdenvNoCC;
+
+  standardFrameworkPath = name: private:
+    "/System/Library/${lib.optionalString private "Private"}Frameworks/${name}.framework";
+
+  mkDepsRewrites = deps:
+  let
+    mergeRewrites = x: y: {
+      prefix = lib.mergeAttrs (x.prefix or {}) (y.prefix or {});
+      const = lib.mergeAttrs (x.const or {}) (y.const or {});
+    };
+
+    rewriteArgs = { prefix ? {}, const ? {} }: lib.concatLists (
+      (lib.mapAttrsToList (from: to: [ "-p" "${from}:${to}" ]) prefix) ++
+      (lib.mapAttrsToList (from: to: [ "-c" "${from}:${to}" ]) const)
+    );
+
+    rewrites = depList: lib.fold mergeRewrites {}
+      (map (dep: dep.tbdRewrites)
+        (lib.filter (dep: dep ? tbdRewrites) depList));
+  in
+    lib.escapeShellArgs (rewriteArgs (rewrites (builtins.attrValues deps)));
+
+  mkFramework = { name, deps, private ? false }:
+    let self = stdenv.mkDerivation {
+      pname = "apple-${lib.optionalString private "private-"}framework-${name}";
+      version = MacOSX-SDK.version;
+
+      dontUnpack = true;
+
+      # because we copy files from the system
+      preferLocalBuild = true;
+
+      disallowedRequisites = [ MacOSX-SDK ];
+
+      nativeBuildInputs = [ buildPackages.darwin.rewrite-tbd ];
+
+      installPhase = ''
+        mkdir -p $out/Library/Frameworks
+
+        cp -r ${MacOSX-SDK}${standardFrameworkPath name private} $out/Library/Frameworks
+
+        # Fix and check tbd re-export references
+        chmod u+w -R $out
+        find $out -name '*.tbd' -type f | while read tbd; do
+          echo "Fixing re-exports in $tbd"
+          rewrite-tbd \
+            -p ${standardFrameworkPath name private}/:$out/Library/Frameworks/${name}.framework/ \
+            ${mkDepsRewrites deps} \
+            -r ${builtins.storeDir} \
+            "$tbd"
+        done
+      '';
+
+      propagatedBuildInputs = builtins.attrValues deps;
+
+      passthru = {
+        tbdRewrites = {
+          prefix."${standardFrameworkPath name private}/" = "${self}/Library/Frameworks/${name}.framework/";
+        };
+      };
+
+      meta = with lib; {
+        description = "Apple SDK framework ${name}";
+        maintainers = with maintainers; [ copumpkin ];
+        platforms   = platforms.darwin;
+      };
+    };
+  in self;
+
+  framework = name: deps: mkFramework { inherit name deps; private = false; };
+  privateFramework = name: deps: mkFramework { inherit name deps; private = true; };
+in rec {
+  libs = {
+    xpc = stdenv.mkDerivation {
+      name   = "apple-lib-xpc";
+      dontUnpack = true;
+
+      installPhase = ''
+        mkdir -p $out/include
+        pushd $out/include >/dev/null
+        cp -r "${MacOSX-SDK}/usr/include/xpc" $out/include/xpc
+        cp "${MacOSX-SDK}/usr/include/launch.h" $out/include/launch.h
+        popd >/dev/null
+      '';
+    };
+
+    Xplugin = stdenv.mkDerivation {
+      name   = "apple-lib-Xplugin";
+      dontUnpack = true;
+
+      propagatedBuildInputs = with frameworks; [
+        OpenGL ApplicationServices Carbon IOKit CoreGraphics CoreServices CoreText
+      ];
+
+      installPhase = ''
+        mkdir -p $out/include $out/lib
+        ln -s "${MacOSX-SDK}/include/Xplugin.h" $out/include/Xplugin.h
+        cp ${MacOSX-SDK}/usr/lib/libXplugin.1.tbd $out/lib
+        ln -s libXplugin.1.tbd $out/lib/libXplugin.tbd
+      '';
+    };
+
+    utmp = stdenv.mkDerivation {
+      name   = "apple-lib-utmp";
+      dontUnpack = true;
+
+      installPhase = ''
+        mkdir -p $out/include
+        pushd $out/include >/dev/null
+        ln -s "${MacOSX-SDK}/include/utmp.h"
+        ln -s "${MacOSX-SDK}/include/utmpx.h"
+        popd >/dev/null
+      '';
+    };
+
+    sandbox = stdenv.mkDerivation {
+      name = "apple-lib-sandbox";
+
+      dontUnpack = true;
+      dontBuild = true;
+
+      installPhase = ''
+        mkdir -p $out/include $out/lib
+        ln -s "${MacOSX-SDK}/usr/include/sandbox.h" $out/include/sandbox.h
+        cp "${MacOSX-SDK}/usr/lib/libsandbox.1.tbd" $out/lib
+        ln -s libsandbox.1.tbd $out/lib/libsandbox.tbd
+      '';
+    };
+
+    libDER = stdenv.mkDerivation {
+      name = "apple-lib-libDER";
+      dontUnpack = true;
+      installPhase = ''
+        mkdir -p $out/include
+        cp -r ${MacOSX-SDK}/usr/include/libDER $out/include
+      '';
+    };
+
+    simd = stdenv.mkDerivation {
+      name = "apple-lib-simd";
+      dontUnpack = true;
+      installPhase = ''
+        mkdir -p $out/include
+        cp -r ${MacOSX-SDK}/usr/include/simd $out/include
+      '';
+    };
+  };
+
+  overrides = super: {
+    CoreFoundation = lib.overrideDerivation super.CoreFoundation (drv: {
+      setupHook = ./cf-setup-hook.sh;
+    });
+
+    # This framework doesn't exist in newer SDKs (somewhere around 10.13), but
+    # there are references to it in nixpkgs.
+    QuickTime = throw "QuickTime framework not available";
+
+    # Seems to be appropriate given https://developer.apple.com/forums/thread/666686
+    JavaVM = super.JavaNativeFoundation;
+  };
+
+  bareFrameworks = (
+    lib.mapAttrs framework (import ./frameworks.nix {
+      inherit frameworks libs;
+      inherit (pkgs.darwin) libobjc Libsystem;
+      inherit (pkgs.darwin.apple_sdk) libnetwork;
+    })
+  ) // (
+    lib.mapAttrs privateFramework (import ./private-frameworks.nix {
+      inherit frameworks;
+    })
+  );
+
+  frameworks = bareFrameworks // overrides bareFrameworks;
+}
--- a/pkgs/os-specific/darwin/apple-sdk-11.0/cf-setup-hook.sh
+++ b/pkgs/os-specific/darwin/apple-sdk-11.0/cf-setup-hook.sh
@ -0,0 +1,6 @@
+forceLinkCoreFoundationFramework() {
+  NIX_CFLAGS_COMPILE="-F@out@/Library/Frameworks${NIX_CFLAGS_COMPILE:+ }${NIX_CFLAGS_COMPILE-}"
+  NIX_LDFLAGS+=" @out@/Library/Frameworks/CoreFoundation.framework/CoreFoundation"
+}
+
+preConfigureHooks+=(forceLinkCoreFoundationFramework)
--- a/pkgs/os-specific/darwin/apple-sdk-11.0/default.nix
+++ b/pkgs/os-specific/darwin/apple-sdk-11.0/default.nix
@ -0,0 +1,58 @@
+{ stdenvNoCC, fetchurl, newScope, pkgs
+, xar, cpio, python3, pbzx }:
+
+let
+  MacOSX-SDK = stdenvNoCC.mkDerivation rec {
+    pname = "MacOSX-SDK";
+    version = "11.0.0";
+
+    # https://swscan.apple.com/content/catalogs/others/index-11-10.15-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog
+    src = fetchurl {
+      url = "http://swcdn.apple.com/content/downloads/46/21/001-89745-A_56FM390IW5/v1um2qppgfdnam2e9cdqcqu2r6k8aa3lis/CLTools_macOSNMOS_SDK.pkg";
+      sha256 = "0n425smj4q1vxbza8fzwnk323fyzbbq866q32w288c44hl5yhwsf";
+    };
+
+    dontBuild = true;
+    darwinDontCodeSign = true;
+
+    nativeBuildInputs = [ cpio pbzx ];
+
+    outputs = [ "out" ];
+
+    unpackPhase = ''
+      pbzx $src | cpio -idm
+    '';
+
+    installPhase = ''
+      cd Library/Developer/CommandLineTools/SDKs/MacOSX11.1.sdk
+
+      mkdir $out
+      cp -r System usr $out/
+    '';
+
+    passthru = {
+      inherit version;
+    };
+  };
+
+  callPackage = newScope (packages // pkgs.darwin // { inherit MacOSX-SDK; });
+
+  packages = {
+    inherit (callPackage ./apple_sdk.nix {}) frameworks libs;
+
+    # TODO: this is nice to be private. is it worth the callPackage above?
+    # Probably, I don't think that callPackage costs much at all.
+    inherit MacOSX-SDK;
+
+    Libsystem = callPackage ./libSystem.nix {};
+    LibsystemCross = pkgs.darwin.Libsystem;
+    libcharset = callPackage ./libcharset.nix {};
+    libunwind = callPackage ./libunwind.nix {};
+    libnetwork = callPackage ./libnetwork.nix {};
+    objc4 = callPackage ./libobjc.nix {};
+
+    # questionable aliases
+    configd = pkgs.darwin.apple_sdk.frameworks.SystemConfiguration;
+    IOKit = pkgs.darwin.apple_sdk.frameworks.IOKit;
+  };
+in packages
--- a/pkgs/os-specific/darwin/apple-sdk-11.0/frameworks.nix
+++ b/pkgs/os-specific/darwin/apple-sdk-11.0/frameworks.nix
@ -0,0 +1,195 @@
+{ frameworks, libs, libobjc, Libsystem, libnetwork }: with frameworks; with libs;
+{
+  AGL                              = { inherit Carbon OpenGL; };
+  AVFoundation                     = { inherit ApplicationServices AVFCapture AVFCore CoreGraphics simd UniformTypeIdentifiers; };
+  AVKit                            = {};
+  Accelerate                       = { inherit CoreWLAN IOBluetooth; };
+  Accessibility                    = {};
+  Accounts                         = {};
+  AdSupport                        = {};
+  AddressBook                      = { inherit AddressBookCore Carbon ContactsPersistence libobjc; };
+  AppKit                           = { inherit ApplicationServices AudioToolbox AudioUnit Foundation QuartzCore UIFoundation; };
+  AppTrackingTransparency          = {};
+  AppleScriptKit                   = {};
+  AppleScriptObjC                  = {};
+  ApplicationServices              = { inherit ColorSync CoreGraphics CoreServices CoreText ImageIO; };
+  AudioToolbox                     = { inherit AudioToolboxCore CoreAudio CoreMIDI; };
+  AudioUnit                        = { inherit AudioToolbox Carbon CoreAudio; };
+  AudioVideoBridging               = { inherit Foundation; };
+  AuthenticationServices           = {};
+  AutomaticAssessmentConfiguration = {};
+  Automator                        = {};
+  BackgroundTasks                  = {};
+  BusinessChat                     = {};
+  CFNetwork                        = {};
+  CalendarStore                    = {};
+  CallKit                          = {};
+  Carbon                           = { inherit ApplicationServices CoreServices Foundation IOKit QuartzCore Security libobjc; };
+  ClassKit                         = {};
+  CloudKit                         = { inherit CoreLocation; };
+  Cocoa                            = { inherit AppKit CoreData; };
+  Collaboration                    = {};
+  ColorSync                        = {};
+  Combine                          = {};
+  Contacts                         = {};
+  ContactsUI                       = {};
+  CoreAudio                        = { inherit IOKit CoreAudioTypes; };
+  CoreAudioKit                     = { inherit AudioUnit; };
+  CoreAudioTypes                   = {};
+  CoreBluetooth                    = {};
+  CoreData                         = { inherit CloudKit; };
+  CoreDisplay                      = {};
+  CoreFoundation                   = { inherit libobjc; };
+  CoreGraphics                     = { inherit Accelerate IOKit IOSurface SystemConfiguration; };
+  CoreHaptics                      = {};
+  CoreImage                        = {};
+  CoreLocation                     = {};
+  CoreMIDI                         = {};
+  CoreMIDIServer                   = { inherit CoreMIDI; };
+  CoreML                           = {};
+  CoreMedia                        = { inherit ApplicationServices AudioToolbox AudioUnit CoreAudio CoreGraphics CoreVideo; };
+  CoreMediaIO                      = { inherit CoreMedia; };
+  CoreMotion                       = {};
+  CoreServices                     = { inherit CFNetwork CoreAudio CoreData CoreFoundation DiskArbitration NetFS OpenDirectory Security ServiceManagement; };
+  CoreSpotlight                    = {};
+  CoreTelephony                    = {};
+  CoreText                         = { inherit CoreGraphics; };
+  CoreVideo                        = { inherit ApplicationServices CoreGraphics IOSurface OpenGL; };
+  CoreWLAN                         = { inherit SecurityFoundation; };
+  CryptoKit                        = {};
+  CryptoTokenKit                   = {};
+  DVDPlayback                      = {};
+  DeveloperToolsSupport            = {};
+  DeviceCheck                      = {};
+  DirectoryService                 = {};
+  DiscRecording                    = { inherit CoreServices IOKit libobjc; };
+  DiscRecordingUI                  = {};
+  DiskArbitration                  = { inherit IOKit; };
+  DriverKit                        = {};
+  EventKit                         = {};
+  ExceptionHandling                = {};
+  ExecutionPolicy                  = {};
+  ExternalAccessory                = {};
+  FWAUserLib                       = {};
+  FileProvider                     = {};
+  FileProviderUI                   = {};
+  FinderSync                       = {};
+  ForceFeedback                    = { inherit IOKit; };
+  Foundation                       = { inherit ApplicationServices CoreFoundation Security SystemConfiguration libobjc; };
+  GLKit                            = {};
+  GLUT                             = { inherit OpenGL; };
+  GSS                              = {};
+  GameController                   = {};
+  GameKit                          = { inherit Cocoa Foundation GameCenterFoundation GameCenterUI GameCenterUICore GameController GameplayKit Metal MetalKit ModelIO ReplayKit SceneKit SpriteKit; };
+  GameplayKit                      = {};
+  HIDDriverKit                     = {};
+  Hypervisor                       = {};
+  ICADevices                       = { inherit Carbon IOBluetooth libobjc; };
+  IMServicePlugIn                  = {};
+  IOBluetooth                      = { inherit CoreBluetooth IOKit; };
+  IOBluetoothUI                    = { inherit IOBluetooth; };
+  IOKit                            = {};
+  # `IOSurface` should depend on `Libsystem` (in place of `xpc`) but this currently causes build
+  # issues due to incompatibility issues between `Libsystem` and `libcxx`.
+  IOSurface                        = { inherit IOKit xpc; };
+  IOUSBHost                        = {};
+  IdentityLookup                   = {};
+  ImageCaptureCore                 = {};
+  ImageIO                          = { inherit CoreGraphics; };
+  InputMethodKit                   = { inherit Carbon; };
+  InstallerPlugins                 = {};
+  InstantMessage                   = {};
+  Intents                          = {};
+  JavaNativeFoundation             = {};
+  JavaRuntimeSupport               = {};
+  JavaScriptCore                   = { inherit libobjc; };
+  Kerberos                         = {};
+  Kernel                           = { inherit IOKit; };
+  KernelManagement                 = {};
+  LDAP                             = {};
+  LatentSemanticMapping            = { inherit Carbon; };
+  LinkPresentation                 = { inherit URLFormatting; };
+  LocalAuthentication              = {};
+  MLCompute                        = {};
+  MapKit                           = {};
+  MediaAccessibility               = { inherit CoreGraphics CoreText QuartzCore; };
+  MediaLibrary                     = {};
+  MediaPlayer                      = {};
+  MediaToolbox                     = { inherit AudioToolbox AudioUnit CoreMedia; };
+  Message                          = {};
+  Metal                            = {};
+  MetalKit                         = { inherit Metal ModelIO; };
+  MetalPerformanceShaders          = {};
+  MetalPerformanceShadersGraph     = {};
+  MetricKit                        = { inherit SignpostMetrics; };
+  ModelIO                          = {};
+  MultipeerConnectivity            = {};
+  NaturalLanguage                  = {};
+  NearbyInteraction                = {};
+  NetFS                            = {};
+  Network                          = { inherit libnetwork; };
+  NetworkExtension                 = { inherit Network; };
+  NetworkingDriverKit              = {};
+  NotificationCenter               = {};
+  OSAKit                           = { inherit Carbon; };
+  OSLog                            = {};
+  OpenAL                           = {};
+  OpenCL                           = { inherit IOSurface OpenGL; };
+  OpenDirectory                    = {};
+  OpenGL                           = {};
+  PCIDriverKit                     = {};
+  PCSC                             = { inherit CoreData; };
+  PDFKit                           = {};
+  ParavirtualizedGraphics          = {};
+  PassKit                          = { inherit PassKitCore; };
+  PencilKit                        = {};
+  Photos                           = {};
+  PhotosUI                         = {};
+  PreferencePanes                  = {};
+  PushKit                          = {};
+  Python                           = {};
+  QTKit                            = { inherit CoreMedia CoreMediaIO MediaToolbox VideoToolbox; };
+  Quartz                           = { inherit QTKit QuartzCore QuickLook PDFKit; };
+  QuartzCore                       = { inherit ApplicationServices CoreImage CoreVideo Metal OpenCL libobjc; };
+  QuickLook                        = { inherit ApplicationServices; };
+  QuickLookThumbnailing            = {};
+  RealityKit                       = {};
+  ReplayKit                        = {};
+  Ruby                             = {};
+  SafariServices                   = {};
+  SceneKit                         = {};
+  ScreenSaver                      = {};
+  ScreenTime                       = {};
+  ScriptingBridge                  = {};
+  Security                         = { inherit IOKit libDER; };
+  SecurityFoundation               = { inherit Security; };
+  SecurityInterface                = { inherit Security SecurityFoundation; };
+  SensorKit                        = {};
+  ServiceManagement                = { inherit Security; };
+  Social                           = {};
+  SoundAnalysis                    = {};
+  Speech                           = {};
+  SpriteKit                        = {};
+  StoreKit                         = {};
+  SwiftUI                          = {};
+  SyncServices                     = {};
+  System                           = {};
+  SystemConfiguration              = { inherit Security; };
+  SystemExtensions                 = {};
+  TWAIN                            = { inherit Carbon; };
+  Tcl                              = {};
+  Tk                               = {};
+  USBDriverKit                     = {};
+  UniformTypeIdentifiers           = {};
+  UserNotifications                = {};
+  UserNotificationsUI              = {};
+  VideoDecodeAcceleration          = { inherit CoreVideo; };
+  VideoSubscriberAccount           = {};
+  VideoToolbox                     = { inherit CoreMedia CoreVideo; };
+  Virtualization                   = {};
+  Vision                           = {};
+  WebKit                           = { inherit ApplicationServices Carbon JavaScriptCore OpenGL libobjc; };
+  WidgetKit                        = {};
+  iTunesLibrary                    = {};
+  vmnet                            = {};
+}
--- a/pkgs/os-specific/darwin/apple-sdk-11.0/libSystem.nix
+++ b/pkgs/os-specific/darwin/apple-sdk-11.0/libSystem.nix
@ -0,0 +1,78 @@
+{ stdenvNoCC, buildPackages, MacOSX-SDK }:
+
+stdenvNoCC.mkDerivation {
+  pname = "libSystem";
+  version = MacOSX-SDK.version;
+
+  dontBuild = true;
+  dontUnpack = true;
+
+  nativeBuildInputs = [ buildPackages.darwin.rewrite-tbd ];
+
+  includeDirs = [
+    "CommonCrypto" "_types" "architecture" "arpa" "atm" "bank" "bsd" "bsm"
+    "corecrypto" "corpses" "default_pager" "device" "dispatch" "hfs" "i386"
+    "iokit" "kern" "libkern" "mach" "mach-o" "mach_debug" "machine" "malloc"
+    "miscfs" "net" "netinet" "netinet6" "netkey" "nfs" "os" "osfmk" "pexpert"
+    "platform" "protocols" "pthread" "rpc" "rpcsvc" "secure" "security"
+    "servers" "sys" "uuid" "vfs" "voucher" "xlocale"
+  ] ++ [
+    "arm" "xpc" "arm64"
+  ];
+
+  csu = [
+    "bundle1.o" "crt0.o" "crt1.10.5.o" "crt1.10.6.o" "crt1.o" "dylib1.10.5.o"
+    "dylib1.o" "gcrt1.o" "lazydylib1.o"
+  ];
+
+  installPhase = ''
+    mkdir -p $out/{include,lib}
+
+    for dir in $includeDirs; do
+      from=${MacOSX-SDK}/usr/include/$dir
+      if [ -e "$from" ]; then
+        cp -dr $from $out/include
+      else
+        echo "Header directory '$from' doesn't exist: skipping"
+      fi
+    done
+
+    cp -d \
+      ${MacOSX-SDK}/usr/include/*.h \
+      $out/include
+
+    rm $out/include/tk*.h $out/include/tcl*.h
+
+    cp -dr \
+      ${MacOSX-SDK}/usr/lib/libSystem.* \
+      ${MacOSX-SDK}/usr/lib/system \
+      $out/lib
+
+    # Extra libraries
+    for name in c dbm dl info m mx poll proc pthread rpcsvc util gcc_s.1 resolv; do
+      cp -d \
+        ${MacOSX-SDK}/usr/lib/lib$name.tbd \
+        ${MacOSX-SDK}/usr/lib/lib$name.*.tbd \
+        $out/lib
+    done
+
+    for f in $csu; do
+      from=${MacOSX-SDK}/usr/lib/$f
+      if [ -e "$from" ]; then
+        cp -d $from $out/lib
+      else
+        echo "Csu file '$from' doesn't exist: skipping"
+      fi
+    done
+
+    chmod u+w -R $out/lib
+    find $out -name '*.tbd' -type f | while read tbd; do
+      rewrite-tbd \
+        -c /usr/lib/libsystem.dylib:$out/lib/libsystem.dylib \
+        -p /usr/lib/system/:$out/lib/system/ \
+        -r ${builtins.storeDir} \
+        "$tbd"
+    done
+  '';
+}
+
--- a/pkgs/os-specific/darwin/apple-sdk-11.0/libcharset.nix
+++ b/pkgs/os-specific/darwin/apple-sdk-11.0/libcharset.nix
@ -0,0 +1,16 @@
+{ stdenvNoCC, buildPackages, MacOSX-SDK }:
+
+stdenvNoCC.mkDerivation {
+  pname = "libcharset";
+  version = MacOSX-SDK.version;
+
+  dontUnpack = true;
+  dontBuild = true;
+
+  nativeBuildInputs = [ buildPackages.darwin.checkReexportsHook ];
+
+  installPhase = ''
+    mkdir -p $out/{include,lib}
+    cp ${MacOSX-SDK}/usr/lib/libcharset* $out/lib
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-sdk-11.0/libnetwork.nix
+++ b/pkgs/os-specific/darwin/apple-sdk-11.0/libnetwork.nix
@ -0,0 +1,20 @@
+{ stdenvNoCC, buildPackages, MacOSX-SDK }:
+
+let self = stdenvNoCC.mkDerivation {
+  pname = "libnetwork";
+  version = MacOSX-SDK.version;
+
+  dontUnpack = true;
+  dontBuild = true;
+
+  installPhase = ''
+    mkdir -p $out/lib
+    cp ${MacOSX-SDK}/usr/lib/libnetwork* $out/lib
+  '';
+
+  passthru = {
+    tbdRewrites = {
+      const."/usr/lib/libnetwork.dylib" = "${self}/lib/libnetwork.dylib";
+    };
+  };
+}; in self
--- a/pkgs/os-specific/darwin/apple-sdk-11.0/libobjc.nix
+++ b/pkgs/os-specific/darwin/apple-sdk-11.0/libobjc.nix
@ -0,0 +1,21 @@
+{ stdenvNoCC, MacOSX-SDK, libcharset }:
+
+let self = stdenvNoCC.mkDerivation {
+  pname = "libobjc";
+  version = MacOSX-SDK.version;
+
+  dontUnpack = true;
+  dontBuild = true;
+
+  installPhase = ''
+    mkdir -p $out/{include,lib}
+    cp -r ${MacOSX-SDK}/usr/include/objc $out/include
+    cp ${MacOSX-SDK}/usr/lib/libobjc* $out/lib
+  '';
+
+  passthru = {
+    tbdRewrites = {
+      const."/usr/lib/libobjc.A.dylib" = "${self}/lib/libobjc.A.dylib";
+    };
+  };
+}; in self
--- a/pkgs/os-specific/darwin/apple-sdk-11.0/libunwind.nix
+++ b/pkgs/os-specific/darwin/apple-sdk-11.0/libunwind.nix
@ -0,0 +1,24 @@
+{ stdenvNoCC, buildPackages, MacOSX-SDK }:
+
+stdenvNoCC.mkDerivation {
+  pname = "libunwind";
+  version = MacOSX-SDK.version;
+
+  dontUnpack = true;
+  dontBuild = true;
+
+  nativeBuildInputs = [ buildPackages.darwin.checkReexportsHook ];
+
+  installPhase = ''
+    mkdir -p $out/include/mach-o
+
+    cp \
+      ${MacOSX-SDK}/usr/include/libunwind.h \
+      ${MacOSX-SDK}/usr/include/unwind.h \
+      $out/include
+
+    cp \
+      ${MacOSX-SDK}/usr/include/mach-o/compact_unwind_encoding.h \
+      $out/include/mach-o
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-sdk-11.0/private-frameworks.nix
+++ b/pkgs/os-specific/darwin/apple-sdk-11.0/private-frameworks.nix
@ -0,0 +1,21 @@
+{ frameworks }: with frameworks;
+# generated by hand to avoid exposing all private frameworks
+# frameworks here are only the necessary ones used by public frameworks.
+{
+  AVFCapture = {};
+  AVFCore = {};
+  AddressBookCore = { inherit ContactsPersistence; };
+  AudioToolboxCore = {};
+  ContactsPersistence = {};
+  UIFoundation = {};
+  GameCenterFoundation = {};
+  GameCenterUI = {};
+  GameCenterUICore = {};
+  URLFormatting = {};
+  SignpostMetrics = {};
+  PassKitCore = {};
+  SkyLight = {};
+
+  # Also expose CoreSymbolication; used by `root` package.
+  CoreSymbolication = {};
+}
--- a/pkgs/os-specific/darwin/apple-sdk/cf-setup-hook.sh
+++ b/pkgs/os-specific/darwin/apple-sdk/cf-setup-hook.sh
@ -0,0 +1,9 @@
+linkSystemCoreFoundationFramework() {
+  NIX_CFLAGS_COMPILE="-F@out@/Library/Frameworks${NIX_CFLAGS_COMPILE:+ }${NIX_CFLAGS_COMPILE-}"
+  # gross! many symbols (such as _OBJC_CLASS_$_NSArray) are defined in system CF, but not
+  # in the opensource release
+  # if the package needs private headers, we assume they also want to link with system CF
+  NIX_LDFLAGS+=" @out@/Library/Frameworks/CoreFoundation.framework/CoreFoundation"
+}
+
+preConfigureHooks+=(linkSystemCoreFoundationFramework)
--- a/pkgs/os-specific/darwin/apple-sdk/default.nix
+++ b/pkgs/os-specific/darwin/apple-sdk/default.nix
@ -0,0 +1,339 @@
+{ stdenv, fetchurl, xar, cpio, pkgs, python3, pbzx, lib, darwin-stubs, print-reexports }:
+
+let
+  # sadly needs to be exported because security_tool needs it
+  sdk = stdenv.mkDerivation rec {
+    pname = "MacOS_SDK";
+    version = "10.12";
+
+    # This URL comes from https://swscan.apple.com/content/catalogs/others/index-10.12.merged-1.sucatalog, which we found by:
+    #  1. Google: site:swscan.apple.com and look for a name that seems appropriate for your version
+    #  2. In the resulting file, search for a file called DevSDK ending in .pkg
+    #  3. ???
+    #  4. Profit
+    src = fetchurl {
+      url    = "http://swcdn.apple.com/content/downloads/33/36/041-90419-A_7JJ4H9ZHO2/xs88ob5wjz6riz7g6764twblnvksusg4ps/DevSDK_OSX1012.pkg";
+      sha256 = "13xq34sb7383b37hwy076gnhf96prpk1b4087p87xnwswxbrisih";
+    };
+
+    nativeBuildInputs = [ xar cpio python3 pbzx ];
+
+    outputs = [ "out" "dev" "man" ];
+
+    unpackPhase = ''
+      xar -x -f $src
+    '';
+
+    installPhase = ''
+      start="$(pwd)"
+      mkdir -p $out
+      cd $out
+      pbzx -n $start/Payload | cpio -idm
+
+      mv usr/* .
+      rmdir usr
+
+      mv System/* .
+      rmdir System
+
+      pushd lib
+      cp ${darwin-stubs}/usr/lib/libcups*.tbd .
+      ln -s libcups.2.tbd      libcups.tbd
+      ln -s libcupscgi.1.tbd   libcupscgi.tbd
+      ln -s libcupsimage.2.tbd libcupsimage.tbd
+      ln -s libcupsmime.1.tbd  libcupsmime.tbd
+      ln -s libcupsppdc.1.tbd  libcupsppdc.tbd
+      popd
+    '';
+
+    meta = with lib; {
+      description = "Apple SDK ${version}";
+      maintainers = with maintainers; [ copumpkin ];
+      platforms   = platforms.darwin;
+    };
+  };
+
+  mkFrameworkSubs = name: deps:
+  let
+    deps' = deps // { "${name}" = placeholder "out"; };
+    substArgs = lib.concatMap (x: [ "--subst-var-by" x deps'."${x}" ]) (lib.attrNames deps');
+  in lib.escapeShellArgs substArgs;
+
+  framework = name: deps: stdenv.mkDerivation {
+    name = "apple-framework-${name}";
+
+    dontUnpack = true;
+
+    # because we copy files from the system
+    preferLocalBuild = true;
+
+    disallowedRequisites = [ sdk ];
+
+    nativeBuildInputs = [ print-reexports ];
+
+    extraTBDFiles = [];
+
+    installPhase = ''
+      linkFramework() {
+        local path="$1"
+        local nested_path="$1"
+        if [ "$path" == "JavaNativeFoundation.framework" ]; then
+          local nested_path="JavaVM.framework/Versions/A/Frameworks/JavaNativeFoundation.framework"
+        fi
+        if [ "$path" == "JavaRuntimeSupport.framework" ]; then
+          local nested_path="JavaVM.framework/Versions/A/Frameworks/JavaRuntimeSupport.framework"
+        fi
+        local name="$(basename "$path" .framework)"
+        local current="$(readlink "/System/Library/Frameworks/$nested_path/Versions/Current")"
+        if [ -z "$current" ]; then
+          current=A
+        fi
+
+        local dest="$out/Library/Frameworks/$path"
+
+        mkdir -p "$dest/Versions/$current"
+        pushd "$dest/Versions/$current" >/dev/null
+
+        if [ -d "${sdk.out}/Library/Frameworks/$nested_path/Versions/$current/Headers" ]; then
+          cp -R "${sdk.out}/Library/Frameworks/$nested_path/Versions/$current/Headers" .
+        elif [ -d "${sdk.out}/Library/Frameworks/$name.framework/Versions/$current/Headers" ]; then
+          current="$(readlink "/System/Library/Frameworks/$name.framework/Versions/Current")"
+          cp -R "${sdk.out}/Library/Frameworks/$name.framework/Versions/$current/Headers" .
+        fi
+
+        local tbd_source=${darwin-stubs}/System/Library/Frameworks/$nested_path/Versions/$current
+        if [ "${name}" != "Kernel" ]; then
+          # The Kernel.framework has headers but no actual library component.
+          cp -v $tbd_source/*.tbd .
+        fi
+
+        if [ -d "$tbd_source/Libraries" ]; then
+          mkdir Libraries
+          cp -v $tbd_source/Libraries/*.tbd Libraries/
+        fi
+
+        ln -s -L "/System/Library/Frameworks/$nested_path/Versions/$current/Resources"
+
+        if [ -f "/System/Library/Frameworks/$nested_path/module.map" ]; then
+          ln -s "/System/Library/Frameworks/$nested_path/module.map"
+        fi
+
+        pushd "${sdk.out}/Library/Frameworks/$nested_path/Versions/$current" >/dev/null
+        local children=$(echo Frameworks/*.framework)
+        popd >/dev/null
+
+        for child in $children; do
+          childpath="$path/Versions/$current/$child"
+          linkFramework "$childpath"
+        done
+
+        pushd ../.. >/dev/null
+        ln -s "$current" Versions/Current
+        ln -s Versions/Current/* .
+        popd >/dev/null
+
+        popd >/dev/null
+      }
+
+      linkFramework "${name}.framework"
+
+      # linkFramework is recursive, the rest of the processing is not.
+
+      local tbd_source=${darwin-stubs}/System/Library/Frameworks/${name}.framework
+      for tbd in $extraTBDFiles; do
+        local tbd_dest_dir=$out/Library/Frameworks/${name}.framework/$(dirname "$tbd")
+        mkdir -p "$tbd_dest_dir"
+        cp -v "$tbd_source/$tbd" "$tbd_dest_dir"
+      done
+
+      # Fix and check tbd re-export references
+      find $out -name '*.tbd' | while read tbd; do
+        echo "Fixing re-exports in $tbd"
+        substituteInPlace "$tbd" ${mkFrameworkSubs name deps}
+
+        echo "Checking re-exports in $tbd"
+        print-reexports "$tbd" | while read target; do
+          local expected="''${target%.dylib}.tbd"
+          if ! [ -e "$expected" ]; then
+            echo -e "Re-export missing:\n\t$target\n\t(expected $expected)"
+            echo -e "While processing\n\t$tbd"
+            exit 1
+          else
+            echo "Re-exported target $target ok"
+          fi
+        done
+      done
+    '';
+
+    propagatedBuildInputs = builtins.attrValues deps;
+
+    # don't use pure CF for dylibs that depend on frameworks
+    setupHook = ./framework-setup-hook.sh;
+
+    # Not going to be more specific than this for now
+    __propagatedImpureHostDeps = lib.optionals (name != "Kernel") [
+      # The setup-hook ensures that everyone uses the impure CoreFoundation who uses these SDK frameworks, so let's expose it
+      "/System/Library/Frameworks/CoreFoundation.framework"
+      "/System/Library/Frameworks/${name}.framework"
+      "/System/Library/Frameworks/${name}.framework/${name}"
+    ];
+
+    meta = with lib; {
+      description = "Apple SDK framework ${name}";
+      maintainers = with maintainers; [ copumpkin ];
+      platforms   = platforms.darwin;
+    };
+  };
+
+  tbdOnlyFramework = name: { private ? true }: stdenv.mkDerivation {
+    name = "apple-framework-${name}";
+    dontUnpack = true;
+    installPhase = ''
+      mkdir -p $out/Library/Frameworks/
+      cp -r ${darwin-stubs}/System/Library/${lib.optionalString private "Private"}Frameworks/${name}.framework \
+        $out/Library/Frameworks
+
+      cd $out/Library/Frameworks/${name}.framework
+
+      versions=(./Versions/*)
+      if [ "''${#versions[@]}" != 1 ]; then
+        echo "Unable to determine current version of framework ${name}"
+        exit 1
+      fi
+      current=$(basename ''${versions[0]})
+
+      chmod u+w -R .
+      ln -s "$current" Versions/Current
+      ln -s Versions/Current/* .
+
+      # NOTE there's no re-export checking here, this is probably wrong
+    '';
+  };
+in rec {
+  libs = {
+    xpc = stdenv.mkDerivation {
+      name   = "apple-lib-xpc";
+      dontUnpack = true;
+
+      installPhase = ''
+        mkdir -p $out/include
+        pushd $out/include >/dev/null
+        cp -r "${lib.getDev sdk}/include/xpc" $out/include/xpc
+        cp "${lib.getDev sdk}/include/launch.h" $out/include/launch.h
+        popd >/dev/null
+      '';
+    };
+
+    Xplugin = stdenv.mkDerivation {
+      name   = "apple-lib-Xplugin";
+      dontUnpack = true;
+
+      # Not enough
+      __propagatedImpureHostDeps = [ "/usr/lib/libXplugin.1.dylib" ];
+
+      propagatedBuildInputs = with frameworks; [
+        OpenGL ApplicationServices Carbon IOKit CoreGraphics CoreServices CoreText
+      ];
+
+      installPhase = ''
+        mkdir -p $out/include $out/lib
+        ln -s "${lib.getDev sdk}/include/Xplugin.h" $out/include/Xplugin.h
+        cp ${darwin-stubs}/usr/lib/libXplugin.1.tbd $out/lib
+        ln -s libXplugin.1.tbd $out/lib/libXplugin.tbd
+      '';
+    };
+
+    utmp = stdenv.mkDerivation {
+      name   = "apple-lib-utmp";
+      dontUnpack = true;
+
+      installPhase = ''
+        mkdir -p $out/include
+        pushd $out/include >/dev/null
+        ln -s "${lib.getDev sdk}/include/utmp.h"
+        ln -s "${lib.getDev sdk}/include/utmpx.h"
+        popd >/dev/null
+      '';
+    };
+
+    sandbox = stdenv.mkDerivation {
+      name = "apple-lib-sandbox";
+      dontUnpack = true;
+
+      installPhase = ''
+        mkdir -p $out/include $out/lib
+        ln -s "${lib.getDev sdk}/include/sandbox.h" $out/include/sandbox.h
+        cp "${darwin-stubs}/usr/lib/libsandbox.1.tbd" $out/lib
+        ln -s libsandbox.1.tbd $out/lib/libsandbox.tbd
+      '';
+    };
+  };
+
+  overrides = super: {
+    AppKit = lib.overrideDerivation super.AppKit (drv: {
+      __propagatedImpureHostDeps = drv.__propagatedImpureHostDeps or [] ++ [
+        "/System/Library/PrivateFrameworks/"
+      ];
+    });
+
+    Carbon = lib.overrideDerivation super.Carbon (drv: {
+      extraTBDFiles = [ "Versions/A/Frameworks/HTMLRendering.framework/Versions/A/HTMLRendering.tbd" ];
+    });
+
+    CoreFoundation = lib.overrideDerivation super.CoreFoundation (drv: {
+      setupHook = ./cf-setup-hook.sh;
+    });
+
+    CoreMedia = lib.overrideDerivation super.CoreMedia (drv: {
+      __propagatedImpureHostDeps = drv.__propagatedImpureHostDeps or [] ++ [
+        "/System/Library/Frameworks/CoreImage.framework"
+      ];
+    });
+
+    CoreMIDI = lib.overrideDerivation super.CoreMIDI (drv: {
+      __propagatedImpureHostDeps = drv.__propagatedImpureHostDeps or [] ++ [
+        "/System/Library/PrivateFrameworks/"
+      ];
+      setupHook = ./private-frameworks-setup-hook.sh;
+    });
+
+    IMServicePlugIn = lib.overrideDerivation super.IMServicePlugIn (drv: {
+      extraTBDFiles = [ "Versions/A/Frameworks/IMServicePlugInSupport.framework/Versions/A/IMServicePlugInSupport.tbd" ];
+    });
+
+    Security = lib.overrideDerivation super.Security (drv: {
+      setupHook = ./security-setup-hook.sh;
+    });
+
+    QuartzCore = lib.overrideDerivation super.QuartzCore (drv: {
+      installPhase = drv.installPhase + ''
+        f="$out/Library/Frameworks/QuartzCore.framework/Headers/CoreImage.h"
+        substituteInPlace "$f" \
+          --replace "QuartzCore/../Frameworks/CoreImage.framework/Headers" "CoreImage"
+      '';
+    });
+
+    MetalKit = lib.overrideDerivation super.MetalKit (drv: {
+      installPhase = drv.installPhase + ''
+        mkdir -p $out/include/simd
+        cp ${lib.getDev sdk}/include/simd/*.h $out/include/simd/
+      '';
+    });
+
+    WebKit = lib.overrideDerivation super.WebKit (drv: {
+      extraTBDFiles = [
+        "Versions/A/Frameworks/WebCore.framework/Versions/A/WebCore.tbd"
+        "Versions/A/Frameworks/WebKitLegacy.framework/Versions/A/WebKitLegacy.tbd"
+      ];
+    });
+  } // lib.genAttrs [ "ContactsPersistence" "CoreSymbolication" "GameCenter" "SkyLight" "UIFoundation" ] (x: tbdOnlyFramework x {});
+
+  bareFrameworks = lib.mapAttrs framework (import ./frameworks.nix {
+    inherit frameworks libs;
+    inherit (pkgs.darwin) libobjc;
+  });
+
+  frameworks = bareFrameworks // overrides bareFrameworks;
+
+  inherit sdk;
+}
--- a/pkgs/os-specific/darwin/apple-sdk/framework-setup-hook.sh
+++ b/pkgs/os-specific/darwin/apple-sdk/framework-setup-hook.sh
@ -0,0 +1,42 @@
+# On macOS, frameworks are linked to the system CoreFoundation but
+# dynamic libraries built with nix use a pure version of CF this
+# causes segfaults for binaries that depend on it at runtime.  This
+# can be solved in two ways.
+# 1. Rewrite references to the pure CF using this setup hook, this
+# works for the simple case but this can still cause problems if other
+# dependencies (eg. python) use the pure CF.
+# 2. Create a wrapper for the binary that sets DYLD_FRAMEWORK_PATH to
+# /System/Library/Frameworks.  This will make everything load the
+# system's CoreFoundation framework while still keeping the
+# dependencies pure for other packages.
+
+fixupOutputHooks+=('fixDarwinFrameworksIn $prefix')
+
+fixDarwinFrameworks() {
+    local systemPrefix='/System/Library/Frameworks'
+
+    for fn in "$@"; do
+        if [ -L "$fn" ]; then continue; fi
+        echo "$fn: fixing dylib"
+
+        for framework in $(otool -L "$fn" | awk '/CoreFoundation\.framework/ {print $1}'); do
+          install_name_tool -change "$framework" "$systemPrefix/CoreFoundation.framework/Versions/A/CoreFoundation" "$fn" >&2
+        done
+    done
+}
+
+fixDarwinFrameworksIn() {
+    local dir="$1"
+    fixDarwinFrameworks $(find "$dir" -name "*.dylib")
+}
+
+
+# This configures the stdenv to use /System/Library/Frameworks/CoreFoundation.framework
+# instead of the nix version by including the system frameworks path
+# as an rpath entry when creating binaries.
+
+useSystemCoreFoundationFramework () {
+  export NIX_COREFOUNDATION_RPATH=/System/Library/Frameworks
+}
+
+addEnvHooks "$hostOffset" useSystemCoreFoundationFramework
--- a/pkgs/os-specific/darwin/apple-sdk/frameworks.nix
+++ b/pkgs/os-specific/darwin/apple-sdk/frameworks.nix
@ -0,0 +1,129 @@
+# Current as of 10.12
+# Epic weird knot-tying happening here.
+# TODO: clean up the process for generating this and include it
+
+{ frameworks, libs, libobjc, }:
+
+with frameworks; with libs; {
+  AGL                     = { inherit Carbon OpenGL; };
+  AVFoundation            = { inherit ApplicationServices CoreGraphics CoreMedia MediaToolbox; };
+  AVKit                   = {};
+  Accounts                = {};
+  AddressBook             = { inherit libobjc Carbon ContactsPersistence; };
+  AppKit                  = { inherit ApplicationServices AudioToolbox AudioUnit Foundation QuartzCore UIFoundation; };
+  AppKitScripting         = {};
+  AppleScriptKit          = {};
+  AppleScriptObjC         = {};
+  AudioToolbox            = { inherit CoreAudio CoreMIDI; };
+  AudioUnit               = { inherit AudioToolbox Carbon CoreAudio; };
+  AudioVideoBridging      = { inherit Foundation; };
+  Automator               = {};
+  CFNetwork               = {};
+  CalendarStore           = {};
+  Cocoa                   = { inherit AppKit CoreData; };
+  Collaboration           = {};
+  # Impure version of CoreFoundation, this should not be used unless another
+  # framework includes headers that are not available in the pure version.
+  CoreFoundation          = {};
+  CoreAudio               = { inherit IOKit; };
+  CoreAudioKit            = { inherit AudioUnit; };
+  CoreData                = {};
+  CoreGraphics            = { inherit Accelerate IOKit IOSurface SystemConfiguration; };
+  CoreImage               = {};
+  CoreLocation            = {};
+  CoreMIDI                = {};
+  CoreMIDIServer          = { inherit CoreMIDI; };
+  CoreMedia               = { inherit ApplicationServices AudioToolbox AudioUnit CoreAudio CoreGraphics CoreVideo; };
+  CoreMediaIO             = { inherit CoreMedia; };
+  CoreText                = { inherit CoreGraphics; };
+  CoreVideo               = { inherit ApplicationServices CoreGraphics IOSurface OpenGL; };
+  CoreWLAN                = { inherit SecurityFoundation; };
+  DVDPlayback             = {};
+  DirectoryService        = {};
+  DiscRecording           = { inherit libobjc CoreServices IOKit; };
+  DiscRecordingUI         = {};
+  DiskArbitration         = { inherit IOKit; };
+  EventKit                = {};
+  ExceptionHandling       = {};
+  FWAUserLib              = {};
+  ForceFeedback           = { inherit IOKit; };
+  Foundation              = { inherit libobjc CoreFoundation Security ApplicationServices SystemConfiguration; };
+  GLKit                   = {};
+  GLUT                    = { inherit OpenGL; };
+  GSS                     = {};
+  GameCenter              = {};
+  GameController          = {};
+  GameKit                 = { inherit Cocoa Foundation GameCenter GameController GameplayKit Metal MetalKit ModelIO SceneKit SpriteKit; };
+  GameplayKit             = {};
+  Hypervisor              = {};
+  ICADevices              = { inherit libobjc Carbon IOBluetooth; };
+  IMServicePlugIn         = {};
+  IOBluetoothUI           = { inherit IOBluetooth; };
+  IOKit                   = {};
+  IOSurface               = { inherit IOKit xpc; };
+  ImageCaptureCore        = {};
+  ImageIO                 = { inherit CoreGraphics; };
+  InputMethodKit          = { inherit Carbon; };
+  InstallerPlugins        = {};
+  InstantMessage          = {};
+  JavaFrameEmbedding      = {};
+  JavaNativeFoundation    = {};
+  JavaRuntimeSupport      = {};
+  JavaScriptCore          = { inherit libobjc; };
+  Kerberos                = {};
+  Kernel                  = { inherit IOKit; };
+  LDAP                    = {};
+  LatentSemanticMapping   = { inherit Carbon; };
+  LocalAuthentication     = {};
+  MapKit                  = {};
+  MediaAccessibility      = { inherit CoreGraphics CoreText QuartzCore; };
+  MediaPlayer             = {};
+  MediaToolbox            = { inherit AudioToolbox AudioUnit CoreMedia; };
+  Metal                   = {};
+  MetalKit                = { inherit ModelIO Metal; };
+  ModelIO                 = {};
+  NetFS                   = {};
+  OSAKit                  = { inherit Carbon; };
+  OpenAL                  = {};
+  OpenCL                  = { inherit IOSurface OpenGL; };
+  OpenGL                  = {};
+  PCSC                    = { inherit CoreData; };
+  PreferencePanes         = {};
+  PubSub                  = {};
+  QTKit                   = { inherit CoreMediaIO CoreMedia MediaToolbox QuickTime VideoToolbox; };
+  QuickLook               = { inherit ApplicationServices; };
+  SceneKit                = {};
+  ScreenSaver             = {};
+  Scripting               = {};
+  ScriptingBridge         = {};
+  Security                = { inherit IOKit; };
+  SecurityFoundation      = {};
+  SecurityInterface       = { inherit Security SecurityFoundation; };
+  ServiceManagement       = { inherit Security; };
+  Social                  = {};
+  SpriteKit               = {};
+  StoreKit                = {};
+  SyncServices            = {};
+  SystemConfiguration     = { inherit Security; };
+  TWAIN                   = { inherit Carbon; };
+  Tcl                     = {};
+  VideoDecodeAcceleration = { inherit CoreVideo; };
+  VideoToolbox            = { inherit CoreMedia CoreVideo; };
+  WebKit                  = { inherit libobjc ApplicationServices Carbon JavaScriptCore OpenGL; };
+
+  # Umbrellas
+  Accelerate          = { inherit CoreWLAN IOBluetooth; };
+  ApplicationServices = { inherit CoreGraphics CoreServices CoreText ImageIO; };
+  Carbon              = { inherit libobjc ApplicationServices CoreServices Foundation IOKit Security QuartzCore; };
+  CoreBluetooth       = {};
+  # TODO: figure out which part of the umbrella depends on CoreFoundation and move it there.
+  CoreServices        = { inherit CFNetwork CoreFoundation CoreAudio CoreData DiskArbitration Security NetFS OpenDirectory ServiceManagement; };
+  IOBluetooth         = { inherit CoreBluetooth IOKit; };
+  JavaVM              = {};
+  OpenDirectory       = {};
+  Quartz              = { inherit QuartzCore QuickLook QTKit; };
+  QuartzCore          = { inherit libobjc ApplicationServices CoreVideo OpenCL CoreImage Metal; };
+  QuickTime           = { inherit ApplicationServices AudioUnit Carbon CoreAudio CoreServices OpenGL QuartzCore; };
+
+  vmnet = {};
+}
--- a/pkgs/os-specific/darwin/apple-sdk/impure-deps.nix
+++ b/pkgs/os-specific/darwin/apple-sdk/impure-deps.nix
@ -0,0 +1,256 @@
+rec {
+  CFNetwork = [
+    "/System/Library/Frameworks/CFNetwork.framework"
+    "/usr/lib/libsqlite3.dylib"
+    "/usr/lib/libxml2.2.dylib"
+  ];
+  ForceFeedback = [
+    "/System/Library/Frameworks/ForceFeedback.framework"
+  ];
+  AGL = [
+    "/System/Library/Frameworks/AGL.framework"
+  ];
+  IOKit = [
+    "/System/Library/Frameworks/IOKit.framework"
+  ];
+  JavaScriptCore = [
+    "/System/Library/Frameworks/JavaScriptCore.framework"
+  ];
+  QuickLook = [
+    "/System/Library/Frameworks/QuickLook.framework"
+  ];
+  Quartz = [
+    "/System/Library/Frameworks/Quartz.framework"
+    "/System/Library/PrivateFrameworks/AppleSystemInfo.framework/Versions/A/AppleSystemInfo"
+    "/System/Library/PrivateFrameworks/CorePDF.framework/Versions/A/CorePDF"
+    "/usr/lib/libspindump.dylib"
+  ];
+  ImageCaptureCore = [
+    "/System/Library/Frameworks/ImageCaptureCore.framework"
+  ];
+  VideoToolbox = [
+    "/System/Library/Frameworks/VideoToolbox.framework"
+    "/System/Library/PrivateFrameworks/AppleVA.framework/Versions/A/AppleVA"
+  ];
+  QuickTime = [
+    "/System/Library/Frameworks/QuickTime.framework"
+  ];
+  CoreMedia = [
+    "/System/Library/Frameworks/CoreMedia.framework"
+  ];
+  CoreMediaIO = [
+    "/System/Library/Frameworks/CoreMediaIO.framework"
+    "/System/Library/PrivateFrameworks/AppSandbox.framework/Versions/A/AppSandbox"
+    "/System/Library/PrivateFrameworks/AppContainer.framework/Versions/A/AppContainer"
+    "/System/Library/PrivateFrameworks/SecCodeWrapper.framework/Versions/A/SecCodeWrapper"
+    "/System/Library/PrivateFrameworks/XPCService.framework/Versions/A/XPCService"
+    "/usr/lib/libsandbox.1.dylib"
+    "/usr/lib/libMatch.1.dylib"
+  ];
+  MediaToolbox = [
+    "/System/Library/Frameworks/MediaToolbox.framework"
+    "/System/Library/PrivateFrameworks/CoreAUC.framework/Versions/A/CoreAUC"
+    "/System/Library/PrivateFrameworks/NetworkStatistics.framework/Versions/A/NetworkStatistics"
+  ];
+  QTKit = [
+    "/System/Library/Frameworks/QTKit.framework"
+    "/System/Library/PrivateFrameworks/CoreMediaAuthoring.framework/Versions/A/CoreMediaAuthoring"
+  ];
+  OSAKit = [
+    "/System/Library/Frameworks/OSAKit.framework"
+    "/usr/lib/libexslt.0.dylib"
+  ];
+  WebKit = [
+    "/System/Library/Frameworks/WebKit.framework"
+  ];
+  DiskArbitration = [
+    "/System/Library/Frameworks/DiskArbitration.framework"
+  ];
+  Security = [
+    "/System/Library/Frameworks/Security.framework"
+    "/usr/lib/libbsm.0.dylib"
+    "/usr/lib/libbz2.1.0.dylib"
+    "/usr/lib/libpam.2.dylib"
+    "/usr/lib/libxar.1.dylib"
+    "/usr/lib/libxml2.2.dylib"
+    "/usr/lib/libsqlite3.dylib"
+  ];
+  GSS = [
+    "/System/Library/Frameworks/GSS.framework"
+  ];
+  Kerberos = [
+    "/System/Library/Frameworks/Kerberos.framework"
+  ];
+  CoreServices = [
+    "/System/Library/Frameworks/CoreServices.framework"
+    "/System/Library/PrivateFrameworks/DataDetectorsCore.framework/Versions/A/DataDetectorsCore"
+    "/System/Library/PrivateFrameworks/TCC.framework/Versions/A/TCC"
+    "/System/Library/PrivateFrameworks/LanguageModeling.framework/Versions/A/LanguageModeling"
+    "/usr/lib/libmecabra.dylib"
+    "/usr/lib/libcmph.dylib"
+    "/usr/lib/libiconv.2.dylib"
+    "/usr/lib/libxslt.1.dylib"
+  ] ++ Foundation;
+  IOSurface = [
+    "/System/Library/Frameworks/IOSurface.framework"
+  ];
+  CoreGraphics = [
+    "/System/Library/Frameworks/CoreGraphics.framework"
+    "/System/Library/PrivateFrameworks/MultitouchSupport.framework/Versions/A/MultitouchSupport"
+    "/usr/lib/libbsm.0.dylib"
+    "/usr/lib/libz.1.dylib"
+  ];
+  CoreText = [
+    "/System/Library/Frameworks/CoreText.framework"
+  ];
+  ImageIO = [
+    "/System/Library/Frameworks/ImageIO.framework"
+  ];
+  ApplicationServices = [
+    "/System/Library/Frameworks/ApplicationServices.framework"
+    "/usr/lib/libcups.2.dylib"
+    "/usr/lib/libresolv.9.dylib"
+  ] ++ AudioToolbox;
+  OpenGL = [
+    "/System/Library/Frameworks/OpenGL.framework"
+  ];
+  CoreVideo = [
+    "/System/Library/Frameworks/CoreVideo.framework"
+  ];
+  QuartzCore = [
+    "/System/Library/Frameworks/QuartzCore.framework"
+    "/System/Library/PrivateFrameworks/CrashReporterSupport.framework/Versions/A/CrashReporterSupport"
+  ];
+  PCSC = [
+    "/System/Library/Frameworks/PCSC.framework"
+  ];
+  AppKit = [
+    "/System/Library/Frameworks/AppKit.framework"
+    "/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Apple80211"
+    "/System/Library/PrivateFrameworks/AppleJPEG.framework/Versions/A/AppleJPEG"
+    "/System/Library/PrivateFrameworks/AppleVPA.framework/Versions/A/AppleVPA"
+    "/System/Library/PrivateFrameworks/Backup.framework/Versions/A/Backup"
+    "/System/Library/PrivateFrameworks/ChunkingLibrary.framework/Versions/A/ChunkingLibrary"
+    "/System/Library/PrivateFrameworks/CommonAuth.framework/Versions/A/CommonAuth"
+    "/System/Library/PrivateFrameworks/CoreSymbolication.framework/Versions/A/CoreSymbolication"
+    "/System/Library/PrivateFrameworks/CoreUI.framework/Versions/A/CoreUI"
+    "/System/Library/PrivateFrameworks/CoreWiFi.framework/Versions/A/CoreWiFi"
+    "/System/Library/PrivateFrameworks/CrashReporterSupport.framework/Versions/A/CrashReporterSupport"
+    "/System/Library/PrivateFrameworks/DataDetectorsCore.framework/Versions/A/DataDetectorsCore"
+    "/System/Library/PrivateFrameworks/DebugSymbols.framework/Versions/A/DebugSymbols"
+    "/System/Library/PrivateFrameworks/DesktopServicesPriv.framework/Versions/A/DesktopServicesPriv"
+    "/System/Library/PrivateFrameworks/FaceCore.framework/Versions/A/FaceCore"
+    "/System/Library/PrivateFrameworks/GenerationalStorage.framework/Versions/A/GenerationalStorage"
+    "/System/Library/PrivateFrameworks/Heimdal.framework/Heimdal"
+    "/System/Library/PrivateFrameworks/Heimdal.framework/Versions/Current"
+    "/System/Library/PrivateFrameworks/Heimdal.framework/Versions/A/Heimdal"
+    "/System/Library/PrivateFrameworks/IconServices.framework/Versions/A/IconServices"
+    "/System/Library/PrivateFrameworks/LanguageModeling.framework/Versions/A/LanguageModeling"
+    "/System/Library/PrivateFrameworks/MultitouchSupport.framework/Versions/A/MultitouchSupport"
+    "/System/Library/PrivateFrameworks/NetAuth.framework/Versions/A/NetAuth"
+    "/System/Library/PrivateFrameworks/PerformanceAnalysis.framework/Versions/A/PerformanceAnalysis"
+    "/System/Library/PrivateFrameworks/RemoteViewServices.framework/Versions/A/RemoteViewServices"
+    "/System/Library/PrivateFrameworks/Sharing.framework/Versions/A/Sharing"
+    "/System/Library/PrivateFrameworks/SpeechRecognitionCore.framework/Versions/A/SpeechRecognitionCore"
+    "/System/Library/PrivateFrameworks/Symbolication.framework/Versions/A/Symbolication"
+    "/System/Library/PrivateFrameworks/TCC.framework/Versions/A/TCC"
+    "/System/Library/PrivateFrameworks/UIFoundation.framework/Versions/A/UIFoundation"
+    "/System/Library/PrivateFrameworks/login.framework/Versions/A/Frameworks/loginsupport.framework/Versions/A/loginsupport"
+    "/usr/lib/libCRFSuite.dylib"
+    "/usr/lib/libOpenScriptingUtil.dylib"
+    "/usr/lib/libarchive.2.dylib"
+    "/usr/lib/libbsm.0.dylib"
+    "/usr/lib/libbz2.1.0.dylib"
+    "/usr/lib/libc++.1.dylib"
+    "/usr/lib/libc++abi.dylib"
+    "/usr/lib/libcmph.dylib"
+    "/usr/lib/libcups.2.dylib"
+    "/usr/lib/libextension.dylib"
+    "/usr/lib/libheimdal-asn1.dylib"
+    "/usr/lib/libiconv.2.dylib"
+    "/usr/lib/libicucore.A.dylib"
+    "/usr/lib/liblangid.dylib"
+    "/usr/lib/liblzma.5.dylib"
+    "/usr/lib/libmecabra.dylib"
+    "/usr/lib/libpam.2.dylib"
+    "/usr/lib/libresolv.9.dylib"
+    "/usr/lib/libsqlite3.dylib"
+    "/usr/lib/libxar.1.dylib"
+    "/usr/lib/libxml2.2.dylib"
+    "/usr/lib/libxslt.1.dylib"
+    "/usr/lib/libz.1.dylib"
+  ];
+  Foundation = [
+    "/System/Library/Frameworks/Foundation.framework"
+    "/usr/lib/libextension.dylib"
+    "/usr/lib/libarchive.2.dylib"
+    "/usr/lib/liblzma.5.dylib"
+    "/usr/lib/liblangid.dylib"
+    "/usr/lib/libCRFSuite.dylib"
+  ];
+  CoreData = [
+    "/System/Library/Frameworks/CoreData.framework"
+  ];
+  Cocoa = [
+    "/System/Library/Frameworks/Cocoa.framework"
+    "/System/Library/PrivateFrameworks/UIFoundation.framework/Versions/A/UIFoundation"
+    "/System/Library/PrivateFrameworks/UIFoundation.framework/Versions/A"
+  ];
+  Carbon = [
+    "/System/Library/Frameworks/Carbon.framework"
+    "/System/Library/PrivateFrameworks/CoreUI.framework/Versions/A/CoreUI"
+    "/System/Library/PrivateFrameworks/DesktopServicesPriv.framework/Versions/A/DesktopServicesPriv"
+    "/System/Library/PrivateFrameworks/IconServices.framework/Versions/A/IconServices"
+    "/System/Library/PrivateFrameworks/ChunkingLibrary.framework/Versions/A/ChunkingLibrary"
+    "/System/Library/PrivateFrameworks/Sharing.framework/Versions/A/Sharing"
+    "/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Apple80211"
+    "/System/Library/PrivateFrameworks/GenerationalStorage.framework/Versions/A/GenerationalStorage"
+  ];
+  CoreAudio = [
+    "/System/Library/Frameworks/CoreAudio.framework"
+  ];
+  AudioUnit = [
+    "/System/Library/Frameworks/AudioUnit.framework"
+  ];
+  CoreMIDI = [
+    "/System/Library/Frameworks/CoreMIDI.framework"
+  ];
+  AudioToolbox = [
+    "/System/Library/Frameworks/AudioToolbox.framework"
+  ];
+  SystemConfiguration = [
+    "/System/Library/Frameworks/SystemConfiguration.framework"
+  ];
+  NetFS = [
+    "/System/Library/Frameworks/NetFS.framework"
+    "/System/Library/PrivateFrameworks/NetAuth.framework/Versions/A/NetAuth"
+    "/System/Library/PrivateFrameworks/login.framework/Versions/A/Frameworks/loginsupport.framework/Versions/A/loginsupport"
+  ];
+  Accelerate = [
+    "/System/Library/Frameworks/Accelerate.framework"
+  ];
+  OpenDirectory = [
+    "/System/Library/Frameworks/OpenDirectory.framework"
+  ];
+  ServiceManagement = [
+    "/System/Library/Frameworks/ServiceManagement.framework"
+  ];
+  OpenCL = [
+    "/System/Library/Frameworks/OpenCL.framework"
+  ];
+  CoreWLAN = [
+    "/System/Library/Frameworks/CoreWLAN.framework"
+  ];
+  IOBluetooth = [
+    "/System/Library/Frameworks/IOBluetooth.framework"
+  ] ++ AudioUnit ++ CoreBluetooth;
+  CoreBluetooth = [
+    "/System/Library/Frameworks/CoreBluetooth.framework"
+  ];
+  SecurityFoundation = [
+    "/System/Library/Frameworks/SecurityFoundation.framework"
+  ];
+  Kernel = [
+    "/System/Library/Frameworks/Kernel.framework"
+  ];
+}
--- a/pkgs/os-specific/darwin/apple-sdk/private-frameworks-setup-hook.sh
+++ b/pkgs/os-specific/darwin/apple-sdk/private-frameworks-setup-hook.sh
@ -0,0 +1,8 @@
+addPrivateFrameworks() {
+    flag="-F/System/Library/PrivateFrameworks"
+    if [[ "${NIX_CFLAGS_COMPILE-}" != *$flag* ]]; then
+        NIX_CFLAGS_COMPILE+=" $flag"
+    fi
+}
+
+addEnvHooks "$hostOffset" addPrivateFrameworks
--- a/pkgs/os-specific/darwin/apple-sdk/security-setup-hook.sh
+++ b/pkgs/os-specific/darwin/apple-sdk/security-setup-hook.sh
@ -0,0 +1,10 @@
+noDeprecatedDeclarations() {
+  # Security.framework has about 2000 deprecated constants, all of which the user will be
+  # warned about at compilation time
+  flag="-Wno-deprecated-declarations"
+  if [[ "${NIX_CFLAGS_COMPILE-}" != *$flag* ]]; then
+    NIX_CFLAGS_COMPILE+=" $flag"
+  fi
+}
+
+addEnvHooks "$hostOffset" noDeprecatedDeclarations
--- a/pkgs/os-specific/darwin/apple-source-releases/CarbonHeaders/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/CarbonHeaders/default.nix
@ -0,0 +1,20 @@
+{ lib, appleDerivation', stdenvNoCC }:
+
+appleDerivation' stdenvNoCC {
+  dontBuild = true;
+
+  installPhase = ''
+    mkdir -p $out/include
+    cp MacTypes.h          $out/include
+    cp ConditionalMacros.h $out/include
+
+    substituteInPlace $out/include/MacTypes.h \
+      --replace "CarbonCore/" ""
+  '';
+
+  meta = with lib; {
+    maintainers = with maintainers; [ copumpkin ];
+    platforms   = platforms.darwin;
+    license     = licenses.apsl20;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/CommonCrypto/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/CommonCrypto/default.nix
@ -0,0 +1,42 @@
+{ lib, appleDerivation', stdenvNoCC }:
+
+appleDerivation' stdenvNoCC {
+  installPhase = ''
+    mkdir -p $out/include/CommonCrypto
+    cp include/* $out/include/CommonCrypto
+  '';
+
+  appleHeaders = ''
+    CommonCrypto/CommonBaseXX.h
+    CommonCrypto/CommonBigNum.h
+    CommonCrypto/CommonCMACSPI.h
+    CommonCrypto/CommonCRC.h
+    CommonCrypto/CommonCrypto.h
+    CommonCrypto/CommonCryptoError.h
+    CommonCrypto/CommonCryptoPriv.h
+    CommonCrypto/CommonCryptor.h
+    CommonCrypto/CommonCryptorSPI.h
+    CommonCrypto/CommonDH.h
+    CommonCrypto/CommonDigest.h
+    CommonCrypto/CommonDigestSPI.h
+    CommonCrypto/CommonECCryptor.h
+    CommonCrypto/CommonHMAC.h
+    CommonCrypto/CommonHMacSPI.h
+    CommonCrypto/CommonKeyDerivation.h
+    CommonCrypto/CommonKeyDerivationSPI.h
+    CommonCrypto/CommonNumerics.h
+    CommonCrypto/CommonRSACryptor.h
+    CommonCrypto/CommonRandom.h
+    CommonCrypto/CommonRandomSPI.h
+    CommonCrypto/CommonSymmetricKeywrap.h
+    CommonCrypto/aes.h
+    CommonCrypto/lionCompat.h
+    CommonCrypto/module.modulemap
+  '';
+
+  meta = with lib; {
+    maintainers = with maintainers; [ copumpkin ];
+    platforms   = platforms.darwin;
+    license     = licenses.apsl20;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/Csu/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Csu/default.nix
@ -0,0 +1,28 @@
+{ lib, appleDerivation', stdenv }:
+
+appleDerivation' stdenv {
+
+  prePatch = ''
+    substituteInPlace Makefile \
+      --replace /usr/lib /lib \
+      --replace /usr/local/lib /lib \
+      --replace /usr/bin "" \
+      --replace /bin/ "" \
+      --replace "CC = " "#" \
+      --replace "SDK_DIR = " "SDK_DIR = . #" \
+
+    # Mac OS didn't support rpaths back before 10.5, but we don't care about it.
+    substituteInPlace Makefile \
+      --replace -mmacosx-version-min=10.4 -mmacosx-version-min=10.6 \
+      --replace -mmacosx-version-min=10.5 -mmacosx-version-min=10.6
+  '';
+
+  installFlags = [ "DSTROOT=$(out)" ];
+
+  meta = with lib; {
+    description = "Apple's common startup stubs for darwin";
+    maintainers = with maintainers; [ copumpkin ];
+    platforms   = platforms.darwin;
+    license     = licenses.apsl20;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/ICU/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/ICU/default.nix
@ -0,0 +1,86 @@
+{ appleDerivation, lib, stdenv, buildPackages, python3 }:
+
+let
+  formatVersionNumeric = version:
+    let
+      versionParts = lib.versions.splitVersion version;
+      major = lib.toInt (lib.elemAt versionParts 0);
+      minor = lib.toInt (lib.elemAt versionParts 1);
+      patch = if lib.length versionParts > 2 then lib.toInt (lib.elemAt versionParts 2) else 0;
+    in toString (major * 10000 + minor * 100 + patch);
+in
+
+appleDerivation {
+  nativeBuildInputs = [ python3 ];
+
+  depsBuildBuild = lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) [ buildPackages.stdenv.cc ];
+
+  postPatch = ''
+    substituteInPlace makefile \
+      --replace "/usr/bin/" "" \
+      --replace "xcrun --sdk macosx --find" "echo -n" \
+      --replace "xcrun --sdk macosx.internal --show-sdk-path" "echo -n /dev/null" \
+      --replace "-install_name " "-install_name $out"
+
+    substituteInPlace icuSources/config/mh-darwin \
+      --replace "-install_name " "-install_name $out/"
+
+    # drop using impure /var/db/timezone/icutz
+    substituteInPlace makefile \
+      --replace '-DU_TIMEZONE_FILES_DIR=\"\\\"$(TZDATA_LOOKUP_DIR)\\\"\" -DU_TIMEZONE_PACKAGE=\"\\\"$(TZDATA_PACKAGE)\\\"\"' ""
+
+    # FIXME: This will cause `ld: warning: OS version (12.0) too small, changing to 13.0.0`, APPLE should fix it.
+    substituteInPlace makefile \
+      --replace "ZIPPERING_LDFLAGS=-Wl,-iosmac_version_min,12.0" "ZIPPERING_LDFLAGS="
+
+    # skip test for missing encodingSamples data
+    substituteInPlace icuSources/test/cintltst/ucsdetst.c \
+      --replace "&TestMailFilterCSS" "NULL"
+
+    patchShebangs icuSources
+  '' + lib.optionalString (stdenv.buildPlatform != stdenv.hostPlatform) ''
+
+    # This looks like a bug in the makefile. It defines ENV_BUILDHOST to
+    # propagate the correct value of CC, CXX, etc, but has the following double
+    # expansion that results in the empty string.
+    substituteInPlace makefile \
+      --replace '$($(ENV_BUILDHOST))' '$(ENV_BUILDHOST)'
+  '';
+
+  # APPLE is using makefile to save its default configuration and call ./configure, so we hack makeFlags
+  # instead of configuring ourself, trying to stay abreast of APPLE.
+  dontConfigure = true;
+  makeFlags = [
+    "DSTROOT=$(out)"
+
+    # remove /usr prefix on include and lib
+    "PRIVATE_HDR_PREFIX="
+    "libdir=/lib/"
+
+    "DATA_INSTALL_DIR=/share/icu/"
+    "DATA_LOOKUP_DIR=$(DSTROOT)$(DATA_INSTALL_DIR)"
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ # darwin* platform properties are only defined on darwin
+    # hack to use our lower macos version
+    "MAC_OS_X_VERSION_MIN_REQUIRED=${formatVersionNumeric stdenv.hostPlatform.darwinMinVersion}"
+    "ICU_TARGET_VERSION=-m${stdenv.hostPlatform.darwinPlatform}-version-min=${stdenv.hostPlatform.darwinMinVersion}"
+  ]
+  ++ lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [
+    "CROSS_BUILD=YES"
+    "BUILD_TYPE="
+    "RC_ARCHS=${stdenv.hostPlatform.darwinArch}"
+    "HOSTCC=cc"
+    "HOSTCXX=c++"
+    "CC=${stdenv.cc.targetPrefix}cc"
+    "CXX=${stdenv.cc.targetPrefix}c++"
+    "HOSTISYSROOT="
+    "OSX_HOST_VERSION_MIN_STRING=${stdenv.buildPlatform.darwinMinVersion}"
+  ];
+
+  doCheck = true;
+  checkTarget = "check";
+
+  postInstall = ''
+    # we don't need all those in usr/local
+    rm -rf $out/usr
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/IOKit/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/IOKit/default.nix
@ -0,0 +1,190 @@
+{ lib, appleDerivation', stdenv, IOKitSrcs, xnu, darwin-stubs }:
+
+# Someday it'll make sense to split these out into their own packages, but today is not that day.
+appleDerivation' stdenv {
+  srcs = lib.attrValues IOKitSrcs;
+  sourceRoot = ".";
+
+  phases = [ "unpackPhase" "installPhase" ];
+
+  __propagatedImpureHostDeps = [
+    "/System/Library/Frameworks/IOKit.framework/IOKit"
+    "/System/Library/Frameworks/IOKit.framework/Resources"
+    "/System/Library/Frameworks/IOKit.framework/Versions"
+  ];
+
+  installPhase = ''
+    mkdir -p $out/Library/Frameworks/IOKit.framework
+
+    ###### IMPURITIES
+    ln -s /System/Library/Frameworks/IOKit.framework/Resources \
+      $out/Library/Frameworks/IOKit.framework
+
+    ###### STUBS
+    cp ${darwin-stubs}/System/Library/Frameworks/IOKit.framework/Versions/A/IOKit.tbd \
+      $out/Library/Frameworks/IOKit.framework
+
+    ###### HEADERS
+
+    export dest=$out/Library/Frameworks/IOKit.framework/Headers
+    mkdir -p $dest
+
+    pushd $dest
+    mkdir audio avc DV firewire graphics hid hidsystem i2c kext ndrvsupport
+    mkdir network ps pwr_mgt sbp2 scsi serial storage stream usb video
+    popd
+
+    # root: complete
+    cp IOKitUser-*/IOCFBundle.h                                       $dest
+    cp IOKitUser-*/IOCFPlugIn.h                                       $dest
+    cp IOKitUser-*/IOCFSerialize.h                                    $dest
+    cp IOKitUser-*/IOCFUnserialize.h                                  $dest
+    cp IOKitUser-*/IOCFURLAccess.h                                    $dest
+    cp IOKitUser-*/IODataQueueClient.h                                $dest
+    cp IOKitUser-*/IOKitLib.h                                         $dest
+    cp IOKitUser-*/iokitmig.h                                         $dest
+    cp ${xnu}/Library/PrivateFrameworks/IOKit.framework/Versions/A/Headers/*.h $dest
+
+    # audio: complete
+    cp IOAudioFamily-*/IOAudioDefines.h          $dest/audio
+    cp IOKitUser-*/audio.subproj/IOAudioLib.h    $dest/audio
+    cp IOAudioFamily-*/IOAudioTypes.h            $dest/audio
+
+    # avc: complete
+    cp IOFireWireAVC-*/IOFireWireAVC/IOFireWireAVCConsts.h $dest/avc
+    cp IOFireWireAVC-*/IOFireWireAVCLib/IOFireWireAVCLib.h $dest/avc
+
+    # DV: complete
+    cp IOFWDVComponents-*/DVFamily.h $dest/DV
+
+    # firewire: complete
+    cp IOFireWireFamily-*/IOFireWireFamily.kmodproj/IOFireWireFamilyCommon.h $dest/firewire
+    cp IOFireWireFamily-*/IOFireWireLib.CFPlugInProj/IOFireWireLib.h         $dest/firewire
+    cp IOFireWireFamily-*/IOFireWireLib.CFPlugInProj/IOFireWireLibIsoch.h    $dest/firewire
+    cp IOFireWireFamily-*/IOFireWireFamily.kmodproj/IOFWIsoch.h              $dest/firewire
+
+    # graphics: missing AppleGraphicsDeviceControlUserCommand.h
+    cp IOGraphics-*/IOGraphicsFamily/IOKit/graphics/IOAccelClientConnect.h     $dest/graphics
+    cp IOGraphics-*/IOGraphicsFamily/IOKit/graphics/IOAccelSurfaceConnect.h    $dest/graphics
+    cp IOGraphics-*/IOGraphicsFamily/IOKit/graphics/IOAccelTypes.h             $dest/graphics
+    cp IOGraphics-*/IOGraphicsFamily/IOKit/graphics/IOFramebufferShared.h      $dest/graphics
+    cp IOGraphics-*/IOGraphicsFamily/IOKit/graphics/IOGraphicsEngine.h         $dest/graphics
+    cp IOGraphics-*/IOGraphicsFamily/IOKit/graphics/IOGraphicsInterface.h      $dest/graphics
+    cp IOGraphics-*/IOGraphicsFamily/IOKit/graphics/IOGraphicsInterfaceTypes.h $dest/graphics
+    cp IOKitUser-*/graphics.subproj/IOGraphicsLib.h                            $dest/graphics
+    cp IOGraphics-*/IOGraphicsFamily/IOKit/graphics/IOGraphicsTypes.h          $dest/graphics
+
+    # hid: complete
+    cp IOKitUser-*/hid.subproj/IOHIDBase.h          $dest/hid
+    cp IOKitUser-*/hid.subproj/IOHIDDevice.h        $dest/hid
+    cp IOKitUser-*/hid.subproj/IOHIDDevicePlugIn.h  $dest/hid
+    cp IOKitUser-*/hid.subproj/IOHIDElement.h       $dest/hid
+    cp IOKitUser-*/hid.subproj/IOHIDLib.h           $dest/hid
+    cp IOKitUser-*/hid.subproj/IOHIDManager.h       $dest/hid
+    cp IOKitUser-*/hid.subproj/IOHIDQueue.h         $dest/hid
+    cp IOKitUser-*/hid.subproj/IOHIDTransaction.h   $dest/hid
+    cp IOKitUser-*/hid.subproj/IOHIDValue.h         $dest/hid
+    cp IOHIDFamily-*/IOHIDFamily/IOHIDKeys.h        $dest/hid
+    cp IOHIDFamily-*/IOHIDFamily/IOHIDUsageTables.h $dest/hid
+    cp IOHIDFamily-*/IOHIDLib/IOHIDLibObsolete.h    $dest/hid
+
+    # hidsystem: complete
+    cp IOHIDFamily-*/IOHIDSystem/IOKit/hidsystem/ev_keymap.h      $dest/hidsystem
+    cp IOKitUser-*/hidsystem.subproj/event_status_driver.h        $dest/hidsystem
+    cp IOKitUser-*/hidsystem.subproj/IOHIDLib.h                   $dest/hidsystem
+    cp IOHIDFamily-*/IOHIDSystem/IOKit/hidsystem/IOHIDParameter.h $dest/hidsystem
+    cp IOHIDFamily-*/IOHIDSystem/IOKit/hidsystem/IOHIDShared.h    $dest/hidsystem
+    cp IOHIDFamily-*/IOHIDSystem/IOKit/hidsystem/IOHIDTypes.h     $dest/hidsystem
+    cp IOHIDFamily-*/IOHIDSystem/IOKit/hidsystem/IOLLEvent.h      $dest/hidsystem
+
+
+    # i2c: complete
+    cp IOGraphics-*/IOGraphicsFamily/IOKit/i2c/IOI2CInterface.h $dest/i2c
+
+    # kext: complete
+    cp IOKitUser-*/kext.subproj/KextManager.h $dest/kext
+
+    # ndrvsupport: complete
+    cp IOGraphics-*/IONDRVSupport/IOKit/ndrvsupport/IOMacOSTypes.h $dest/ndrvsupport
+    cp IOGraphics-*/IONDRVSupport/IOKit/ndrvsupport/IOMacOSVideo.h $dest/ndrvsupport
+
+    # network: complete
+    cp IONetworkingFamily-*/IOEthernetController.h       $dest/network
+    cp IONetworkingFamily-*/IOEthernetInterface.h        $dest/network
+    cp IONetworkingFamily-*/IOEthernetStats.h            $dest/network
+    cp IONetworkingFamily-*/IONetworkController.h        $dest/network
+    cp IONetworkingFamily-*/IONetworkData.h              $dest/network
+    cp IONetworkingFamily-*/IONetworkInterface.h         $dest/network
+    cp IOKitUser-*/network.subproj/IONetworkLib.h        $dest/network
+    cp IONetworkingFamily-*/IONetworkMedium.h            $dest/network
+    cp IONetworkingFamily-*/IONetworkStack.h             $dest/network
+    cp IONetworkingFamily-*/IONetworkStats.h             $dest/network
+    cp IONetworkingFamily-*/IONetworkUserClient.h        $dest/network
+
+    # ps: missing IOUPSPlugIn.h
+    cp IOKitUser-*/ps.subproj/IOPowerSources.h $dest/ps
+    cp IOKitUser-*/ps.subproj/IOPSKeys.h       $dest/ps
+
+    # pwr_mgt: complete
+    cp IOKitUser-*/pwr_mgt.subproj/IOPMKeys.h                                          $dest/pwr_mgt
+    cp IOKitUser-*/pwr_mgt.subproj/IOPMLib.h                                           $dest/pwr_mgt
+    cp ${xnu}/Library/PrivateFrameworks/IOKit.framework/Versions/A/Headers/pwr_mgt/*.h $dest/pwr_mgt
+    cp IOKitUser-*/pwr_mgt.subproj/IOPMLibPrivate.h                                    $dest/pwr_mgt # Private
+
+    # sbp2: complete
+    cp IOFireWireSBP2-*/IOFireWireSBP2Lib/IOFireWireSBP2Lib.h $dest/sbp2
+
+    # scsi: omitted for now
+
+    # serial: complete
+    cp IOSerialFamily-*/IOSerialFamily.kmodproj/IOSerialKeys.h $dest/serial
+    cp IOSerialFamily-*/IOSerialFamily.kmodproj/ioss.h         $dest/serial
+
+    # storage: complete
+    # Needs ata subdirectory
+    cp IOStorageFamily-*/IOAppleLabelScheme.h                                    $dest/storage
+    cp IOStorageFamily-*/IOApplePartitionScheme.h                                $dest/storage
+    cp IOBDStorageFamily-*/IOBDBlockStorageDevice.h                              $dest/storage
+    cp IOBDStorageFamily-*/IOBDMedia.h                                           $dest/storage
+    cp IOBDStorageFamily-*/IOBDMediaBSDClient.h                                  $dest/storage
+    cp IOBDStorageFamily-*/IOBDTypes.h                                           $dest/storage
+    cp IOStorageFamily-*/IOBlockStorageDevice.h                                  $dest/storage
+    cp IOStorageFamily-*/IOBlockStorageDriver.h                                  $dest/storage
+    cp IOCDStorageFamily-*/IOCDBlockStorageDevice.h                              $dest/storage
+    cp IOCDStorageFamily-*/IOCDMedia.h                                           $dest/storage
+    cp IOCDStorageFamily-*/IOCDMediaBSDClient.h                                  $dest/storage
+    cp IOCDStorageFamily-*/IOCDPartitionScheme.h                                 $dest/storage
+    cp IOCDStorageFamily-*/IOCDTypes.h                                           $dest/storage
+    cp IODVDStorageFamily-*/IODVDBlockStorageDevice.h                            $dest/storage
+    cp IODVDStorageFamily-*/IODVDMedia.h                                         $dest/storage
+    cp IODVDStorageFamily-*/IODVDMediaBSDClient.h                                $dest/storage
+    cp IODVDStorageFamily-*/IODVDTypes.h                                         $dest/storage
+    cp IOStorageFamily-*/IOFDiskPartitionScheme.h                                $dest/storage
+    cp IOStorageFamily-*/IOFilterScheme.h                                        $dest/storage
+    cp IOFireWireSerialBusProtocolTransport-*/IOFireWireStorageCharacteristics.h $dest/storage
+    cp IOStorageFamily-*/IOGUIDPartitionScheme.h                                 $dest/storage
+    cp IOStorageFamily-*/IOMedia.h                                               $dest/storage
+    cp IOStorageFamily-*/IOMediaBSDClient.h                                      $dest/storage
+    cp IOStorageFamily-*/IOPartitionScheme.h                                     $dest/storage
+    cp IOStorageFamily-*/IOStorage.h                                             $dest/storage
+    cp IOStorageFamily-*/IOStorageCardCharacteristics.h                          $dest/storage
+    cp IOStorageFamily-*/IOStorageDeviceCharacteristics.h                        $dest/storage
+    cp IOStorageFamily-*/IOStorageProtocolCharacteristics.h                      $dest/storage
+
+    # stream: missing altogether
+
+    # usb: complete
+    cp IOUSBFamily-630.4.5/IOUSBFamily/Headers/IOUSBLib.h            $dest/usb
+    cp IOUSBFamily-630.4.5/IOUSBUserClient/Headers/IOUSBUserClient.h $dest/usb
+    cp IOUSBFamily-560.4.2/IOUSBFamily/Headers/USB.h                 $dest/usb # This file is empty in 630.4.5!
+    cp IOUSBFamily-630.4.5/IOUSBFamily/Headers/USBSpec.h             $dest/usb
+
+    # video: missing altogether
+  '';
+
+  meta = with lib; {
+    maintainers = with maintainers; [ joelteon copumpkin ];
+    platforms   = platforms.darwin;
+    license     = licenses.apsl20;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/Libc/0001-Define-TARGET_OS_EMBEDDED-in-std-lib-io-if-not-defin.patch
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libc/0001-Define-TARGET_OS_EMBEDDED-in-std-lib-io-if-not-defin.patch
@ -0,0 +1,47 @@
+From 187d0e8847d080790b22724352e51de50d214dd8 Mon Sep 17 00:00:00 2001
+From: toonn <toonn@toonn.io>
+Date: Tue, 27 Jul 2021 15:12:14 +0200
+Subject: [PATCH] Define TARGET_OS_EMBEDDED in std{lib,io} if not defined
+
+Originally attempted including `TargetConditionals.h` but this had
+knock-on effects, for example, breaking the zlib build because of
+`TARGET_OS_MAC` getting defined.
+
+This should be the lowest impact solution and corresponds to the default
+behavior IIUC.
+---
+ include/stdio.h  | 3 +++
+ include/stdlib.h | 3 +++
+ 2 files changed, 6 insertions(+)
+
+diff --git a/include/stdio.h b/include/stdio.h
+index d0cf7a5..487496e 100644
+--- a/include/stdio.h
+++ b/include/stdio.h
+@@ -351,6 +351,9 @@ __END_DECLS
+ /* Additional functionality provided by:
+  * POSIX.2-1992 C Language Binding Option
+  */
+#ifndef TARGET_OS_EMBEDDED
+#  define TARGET_OS_EMBEDDED 0
+#endif
+ #if TARGET_OS_EMBEDDED
+ #define __swift_unavailable_on(osx_msg, ios_msg) __swift_unavailable(ios_msg)
+ #else
+diff --git a/include/stdlib.h b/include/stdlib.h
+index c04d3a7..0b454ba 100644
+--- a/include/stdlib.h
+++ b/include/stdlib.h
+@@ -183,6 +183,9 @@ unsigned long long
+ #ifndef LIBC_ALIAS_SYSTEM
+ //End-Libc
+ 
+#ifndef TARGET_OS_EMBEDDED
+#  define TARGET_OS_EMBEDDED 0
+#endif
+ #if TARGET_OS_EMBEDDED
+ #define __swift_unavailable_on(osx_msg, ios_msg) __swift_unavailable(ios_msg)
+ #else
+-- 
+2.17.2 (Apple Git-113)
+
--- a/pkgs/os-specific/darwin/apple-source-releases/Libc/825_40_1.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libc/825_40_1.nix
@ -0,0 +1,13 @@
+{ appleDerivation', stdenvNoCC, ed, unifdef }:
+
+appleDerivation' stdenvNoCC {
+  nativeBuildInputs = [ ed unifdef ];
+
+  installPhase = ''
+    export SRCROOT=$PWD
+    export DSTROOT=$out
+    export PUBLIC_HEADERS_FOLDER_PATH=include
+    export PRIVATE_HEADERS_FOLDER_PATH=include
+    bash xcodescripts/headers.sh
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/Libc/CrashReporterClient.h
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libc/CrashReporterClient.h
@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2010 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+/***********************************************************************
+ * Not to be installed in /usr/local/include
+ ***********************************************************************/
+
+#ifndef _LIBC_CRASHREPORTERCLIENT_H
+#define _LIBC_CRASHREPORTERCLIENT_H
+
+#include "stdint.h"
+
+/* Fake the CrashReporterClient API */
+#define CRGetCrashLogMessage() 0
+#define CRSetCrashLogMessage(m) true
+
+#define CRASH_REPORTER_CLIENT_HIDDEN __attribute__((visibility("hidden")))
+#define CRASHREPORTER_ANNOTATIONS_VERSION 4
+#define CRASHREPORTER_ANNOTATIONS_SECTION "__crash_info"
+
+struct crashreporter_annotations_t {
+	uint64_t version;		// unsigned long
+	uint64_t message;		// char *
+	uint64_t signature_string;	// char *
+	uint64_t backtrace;		// char *
+	uint64_t message2;		// char *
+	uint64_t thread;		// uint64_t
+	uint64_t dialog_mode;		// unsigned int
+};
+
+#endif
--- a/pkgs/os-specific/darwin/apple-source-releases/Libc/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libc/default.nix
@ -0,0 +1,38 @@
+{ appleDerivation', stdenvNoCC, ed, unifdef, Libc_old, Libc_10-9 }:
+
+appleDerivation' stdenvNoCC {
+  nativeBuildInputs = [ ed unifdef ];
+
+  patches = [
+    ./0001-Define-TARGET_OS_EMBEDDED-in-std-lib-io-if-not-defin.patch
+  ];
+
+  # TODO: asl.h actually comes from syslog project now
+  installPhase = ''
+    export SRCROOT=$PWD
+    export DSTROOT=$out
+    export PUBLIC_HEADERS_FOLDER_PATH=include
+    export PRIVATE_HEADERS_FOLDER_PATH=include
+    bash xcodescripts/headers.sh
+
+    cp ${./CrashReporterClient.h} $out/include/CrashReporterClient.h
+
+    cp ${Libc_10-9}/include/NSSystemDirectories.h $out/include
+
+    # Ugh Apple stopped releasing this stuff so we need an older one...
+    cp    ${Libc_old}/include/spawn.h    $out/include
+    cp    ${Libc_old}/include/setjmp.h   $out/include
+    cp    ${Libc_old}/include/ucontext.h $out/include
+    cp    ${Libc_old}/include/pthread*.h $out/include
+    cp    ${Libc_old}/include/sched.h    $out/include
+    cp -R ${Libc_old}/include/malloc     $out/include
+
+    mkdir -p $out/include/libkern
+    cp ${Libc_old}/include/asl.h                    $out/include
+    cp ${Libc_old}/include/libproc.h                $out/include
+    cp ${Libc_old}/include/libkern/OSAtomic.h       $out/include/libkern
+    cp ${Libc_old}/include/libkern/OSCacheControl.h $out/include/libkern
+  '';
+
+  appleHeaders = builtins.readFile ./headers.txt;
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/Libc/headers.txt
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libc/headers.txt
@ -0,0 +1,138 @@
+CrashReporterClient.h
+NSSystemDirectories.h
+_locale.h
+_types.h
+_types/_intmax_t.h
+_types/_nl_item.h
+_types/_uint16_t.h
+_types/_uint32_t.h
+_types/_uint64_t.h
+_types/_uint8_t.h
+_types/_uintmax_t.h
+_types/_wctrans_t.h
+_types/_wctype_t.h
+_wctype.h
+_xlocale.h
+aio.h
+alloca.h
+ar.h
+arpa/ftp.h
+arpa/inet.h
+arpa/nameser_compat.h
+arpa/telnet.h
+arpa/tftp.h
+asl.h
+assert.h
+bitstring.h
+cpio.h
+crt_externs.h
+ctype.h
+db.h
+dirent.h
+disktab.h
+err.h
+errno.h
+execinfo.h
+fcntl.h
+fmtmsg.h
+fnmatch.h
+fsproperties.h
+fstab.h
+fts.h
+ftw.h
+get_compat.h
+getopt.h
+glob.h
+inttypes.h
+iso646.h
+langinfo.h
+libc.h
+libc_private.h
+libgen.h
+libkern/OSAtomic.h
+libkern/OSCacheControl.h
+libproc.h
+limits.h
+locale.h
+malloc/malloc.h
+memory.h
+monetary.h
+monitor.h
+mpool.h
+msgcat.h
+ndbm.h
+nl_types.h
+nlist.h
+os/assumes.h
+os/debug_private.h
+paths.h
+poll.h
+printf.h
+protocols/routed.h
+protocols/rwhod.h
+protocols/talkd.h
+protocols/timed.h
+pthread.h
+pthread_impl.h
+pthread_spis.h
+pthread_workqueue.h
+ranlib.h
+readpassphrase.h
+regex.h
+runetype.h
+sched.h
+search.h
+secure/_common.h
+secure/_stdio.h
+secure/_string.h
+semaphore.h
+setjmp.h
+sgtty.h
+signal.h
+spawn.h
+stab.h
+standards.h
+stddef.h
+stdint.h
+stdio.h
+stdlib.h
+strhash.h
+string.h
+stringlist.h
+strings.h
+struct.h
+sys/acl.h
+sys/rbtree.h
+sys/statvfs.h
+sysexits.h
+syslog.h
+tar.h
+termios.h
+time.h
+timeconv.h
+ttyent.h
+tzfile.h
+ucontext.h
+ulimit.h
+unistd.h
+util.h
+utime.h
+utmpx.h
+utmpx_thread.h
+vis.h
+wchar.h
+wctype.h
+wordexp.h
+xlocale.h
+xlocale/__wctype.h
+xlocale/_ctype.h
+xlocale/_inttypes.h
+xlocale/_langinfo.h
+xlocale/_monetary.h
+xlocale/_regex.h
+xlocale/_stdio.h
+xlocale/_stdlib.h
+xlocale/_string.h
+xlocale/_time.h
+xlocale/_wchar.h
+xlocale/_wctype.h
--- a/pkgs/os-specific/darwin/apple-source-releases/Libinfo/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libinfo/default.nix
@ -0,0 +1,50 @@
+{ appleDerivation', stdenvNoCC }:
+
+appleDerivation' stdenvNoCC {
+  installPhase = ''
+    substituteInPlace xcodescripts/install_files.sh \
+      --replace "/usr/local/" "/" \
+      --replace "/usr/" "/" \
+      --replace '-o "$INSTALL_OWNER" -g "$INSTALL_GROUP"' "" \
+      --replace "ln -h" "ln -n"
+
+    export DSTROOT=$out
+    sh xcodescripts/install_files.sh
+  '';
+
+  appleHeaders = ''
+    aliasdb.h
+    bootparams.h
+    configuration_profile.h
+    grp.h
+    ifaddrs.h
+    ils.h
+    kvbuf.h
+    libinfo.h
+    libinfo_muser.h
+    membership.h
+    membershipPriv.h
+    netdb.h
+    netdb_async.h
+    ntsid.h
+    printerdb.h
+    pwd.h
+    rpc/auth.h
+    rpc/auth_unix.h
+    rpc/clnt.h
+    rpc/pmap_clnt.h
+    rpc/pmap_prot.h
+    rpc/pmap_rmt.h
+    rpc/rpc.h
+    rpc/rpc_msg.h
+    rpc/svc.h
+    rpc/svc_auth.h
+    rpc/types.h
+    rpc/xdr.h
+    rpcsvc/yp_prot.h
+    rpcsvc/ypclnt.h
+    si_data.h
+    si_module.h
+    thread_data.h
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/Libm/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libm/default.nix
@ -0,0 +1,11 @@
+{ appleDerivation', stdenvNoCC }:
+
+appleDerivation' stdenvNoCC {
+  installPhase = ''
+    mkdir -p $out/include
+
+    cp Source/Intel/math.h $out/include
+    cp Source/Intel/fenv.h $out/include
+    cp Source/complex.h    $out/include
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/Libnotify/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libnotify/default.nix
@ -0,0 +1,9 @@
+{ appleDerivation', stdenvNoCC }:
+
+appleDerivation' stdenvNoCC {
+  installPhase = ''
+    mkdir -p $out/include
+    cp notify.h      $out/include
+    cp notify_keys.h $out/include
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/Librpcsvc/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Librpcsvc/default.nix
@ -0,0 +1,22 @@
+{ lib, appleDerivation, developer_cmds }:
+
+appleDerivation {
+  buildInputs = [ developer_cmds ];
+
+  installPhase = ''
+    export DSTROOT=$out
+    export SRCROOT=$PWD
+    export OBJROOT=$PWD
+
+    . ./xcodescripts/install_rpcsvc.sh
+
+    mv $out/usr/* $out
+    rmdir $out/usr/
+  '';
+
+  meta = with lib; {
+    maintainers = with maintainers; [ matthewbauer ];
+    platforms   = platforms.darwin;
+    license     = licenses.apsl20;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/Libsystem/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libsystem/default.nix
@ -0,0 +1,146 @@
+{ lib, stdenv, buildPackages
+, appleDerivation', xnu, Libc, Libm, libdispatch, Libinfo
+, dyld, Csu, architecture, libclosure, CarbonHeaders, ncurses, CommonCrypto
+, copyfile, removefile, libresolvHeaders, libresolv, Libnotify, libplatform, libpthread
+, mDNSResponder, launchd, libutilHeaders, hfsHeaders, darling, darwin-stubs
+, headersOnly ? false
+, withLibresolv ? !headersOnly
+}:
+
+appleDerivation' stdenv {
+  dontBuild = true;
+  dontFixup = true;
+
+  installPhase = ''
+    export NIX_ENFORCE_PURITY=
+
+    mkdir -p $out/lib $out/include
+
+    function copyHierarchy () {
+      mkdir -p $1
+      while read f; do
+        mkdir -p $1/$(dirname $f)
+        cp --parents -pn $f $1
+      done
+    }
+
+    # Set up our include directories
+    (cd ${xnu}/include && find . -name '*.h' -or -name '*.defs' | copyHierarchy $out/include)
+    cp ${xnu}/Library/Frameworks/Kernel.framework/Versions/A/Headers/Availability*.h $out/include
+    cp ${xnu}/Library/Frameworks/Kernel.framework/Versions/A/Headers/stdarg.h        $out/include
+
+    for dep in ${Libc} ${Libm} ${Libinfo} ${dyld} ${architecture} \
+               ${libclosure} ${CarbonHeaders} ${libdispatch} ${ncurses.dev} \
+               ${CommonCrypto} ${copyfile} ${removefile} ${libresolvHeaders} \
+               ${Libnotify} ${libplatform} ${mDNSResponder} ${launchd} \
+               ${libutilHeaders} ${libpthread} ${hfsHeaders}; do
+      (cd $dep/include && find . -name '*.h' | copyHierarchy $out/include)
+    done
+
+    (cd ${buildPackages.darwin.cctools.dev}/include/mach-o && find . -name '*.h' | copyHierarchy $out/include/mach-o)
+
+    mkdir -p $out/include/os
+
+    cp ${darling.src}/src/libc/os/activity.h $out/include/os
+    cp ${darling.src}/src/libc/os/log.h $out/include/os
+    cp ${darling.src}/src/duct/include/os/trace.h $out/include/os
+
+    cat <<EOF > $out/include/os/availability.h
+    #ifndef __OS_AVAILABILITY__
+    #define __OS_AVAILABILITY__
+    #include <AvailabilityInternal.h>
+
+    #if defined(__has_feature) && defined(__has_attribute) && __has_attribute(availability)
+      #define API_AVAILABLE(...) __API_AVAILABLE_GET_MACRO(__VA_ARGS__, __API_AVAILABLE4, __API_AVAILABLE3, __API_AVAILABLE2, __API_AVAILABLE1)(__VA_ARGS__)
+      #define API_DEPRECATED(...) __API_DEPRECATED_MSG_GET_MACRO(__VA_ARGS__, __API_DEPRECATED_MSG5, __API_DEPRECATED_MSG4, __API_DEPRECATED_MSG3, __API_DEPRECATED_MSG2, __API_DEPRECATED_MSG1)(__VA_ARGS__)
+      #define API_DEPRECATED_WITH_REPLACEMENT(...) __API_DEPRECATED_REP_GET_MACRO(__VA_ARGS__, __API_DEPRECATED_REP5, __API_DEPRECATED_REP4, __API_DEPRECATED_REP3, __API_DEPRECATED_REP2, __API_DEPRECATED_REP1)(__VA_ARGS__)
+      #define API_UNAVAILABLE(...) __API_UNAVAILABLE_GET_MACRO(__VA_ARGS__, __API_UNAVAILABLE3, __API_UNAVAILABLE2, __API_UNAVAILABLE1)(__VA_ARGS__)
+    #else
+
+      #define API_AVAILABLE(...)
+      #define API_DEPRECATED(...)
+      #define API_DEPRECATED_WITH_REPLACEMENT(...)
+      #define API_UNAVAILABLE(...)
+
+    #endif
+    #endif
+    EOF
+
+    cat <<EOF > $out/include/TargetConditionals.h
+    #ifndef __TARGETCONDITIONALS__
+    #define __TARGETCONDITIONALS__
+    #define TARGET_OS_MAC               1
+    #define TARGET_OS_WIN32             0
+    #define TARGET_OS_UNIX              0
+    #define TARGET_OS_OSX               1
+    #define TARGET_OS_IPHONE            0
+    #define TARGET_OS_IOS               0
+    #define TARGET_OS_WATCH             0
+    #define TARGET_OS_BRIDGE            0
+    #define TARGET_OS_TV                0
+    #define TARGET_OS_SIMULATOR         0
+    #define TARGET_OS_EMBEDDED          0
+    #define TARGET_OS_EMBEDDED_OTHER    0 /* Used in configd */
+    #define TARGET_IPHONE_SIMULATOR     TARGET_OS_SIMULATOR /* deprecated */
+    #define TARGET_OS_NANO              TARGET_OS_WATCH /* deprecated */
+    #define TARGET_OS_LINUX             0
+
+    #define TARGET_CPU_PPC          0
+    #define TARGET_CPU_PPC64        0
+    #define TARGET_CPU_68K          0
+    #define TARGET_CPU_X86          0
+    #define TARGET_CPU_X86_64       1
+    #define TARGET_CPU_ARM          0
+    #define TARGET_CPU_ARM64        0
+    #define TARGET_CPU_MIPS         0
+    #define TARGET_CPU_SPARC        0
+    #define TARGET_CPU_ALPHA        0
+    #define TARGET_RT_MAC_CFM       0
+    #define TARGET_RT_MAC_MACHO     1
+    #define TARGET_RT_LITTLE_ENDIAN 1
+    #define TARGET_RT_BIG_ENDIAN    0
+    #define TARGET_RT_64_BIT        1
+    #endif  /* __TARGETCONDITIONALS__ */
+    EOF
+  '' + lib.optionalString (!headersOnly) ''
+
+    # The startup object files
+    cp ${Csu}/lib/* $out/lib
+
+    cp -vr \
+      ${darwin-stubs}/usr/lib/libSystem.B.tbd \
+      ${darwin-stubs}/usr/lib/system \
+      $out/lib
+
+    substituteInPlace $out/lib/libSystem.B.tbd \
+      --replace "/usr/lib/system/" "$out/lib/system/"
+    ln -s libSystem.B.tbd $out/lib/libSystem.tbd
+
+    # Set up links to pretend we work like a conventional unix (Apple's design, not mine!)
+    for name in c dbm dl info m mx poll proc pthread rpcsvc util gcc_s.10.4 gcc_s.10.5; do
+      ln -s libSystem.tbd $out/lib/lib$name.tbd
+    done
+  '' + lib.optionalString withLibresolv ''
+
+    # This probably doesn't belong here, but we want to stay similar to glibc, which includes resolv internally...
+    cp ${libresolv}/lib/libresolv.9.dylib $out/lib/libresolv.9.dylib
+    resolv_libSystem=$(${stdenv.cc.bintools.targetPrefix}otool -L "$out/lib/libresolv.9.dylib" | tail -n +3 | grep -o "$NIX_STORE.*-\S*") || true
+    echo $libs
+
+    chmod +w $out/lib/libresolv.9.dylib
+    ${stdenv.cc.bintools.targetPrefix}install_name_tool \
+      -id $out/lib/libresolv.9.dylib \
+      -change "$resolv_libSystem" /usr/lib/libSystem.dylib \
+      $out/lib/libresolv.9.dylib
+    ln -s libresolv.9.dylib $out/lib/libresolv.dylib
+  '';
+
+  appleHeaders = builtins.readFile ./headers.txt;
+
+  meta = with lib; {
+    description = "The Mac OS libc/libSystem (tapi library with pure headers)";
+    maintainers = with maintainers; [ copumpkin gridaphobe ];
+    platforms   = platforms.darwin;
+    license     = licenses.apsl20;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/Libsystem/headers.txt
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libsystem/headers.txt
--- a/pkgs/os-specific/darwin/apple-source-releases/Libsystem/system_c_symbols
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libsystem/system_c_symbols
--- a/pkgs/os-specific/darwin/apple-source-releases/Libsystem/system_kernel_symbols
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libsystem/system_kernel_symbols
--- a/pkgs/os-specific/darwin/apple-source-releases/Libsystem/system_symbols
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libsystem/system_symbols
@ -0,0 +1 @@
+_mach_init_routine
--- a/pkgs/os-specific/darwin/apple-source-releases/PowerManagement/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/PowerManagement/default.nix
@ -0,0 +1,10 @@
+{ appleDerivation, xcbuildHook, IOKit }:
+
+appleDerivation {
+  nativeBuildInputs = [ xcbuildHook ];
+  buildInputs = [ IOKit ];
+  xcbuildFlags = [ "-target" "caffeinate" ];
+  installPhase = ''
+    install -D Products/Deployment/caffeinate $out/bin/caffeinate
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/Security/boot.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Security/boot.nix
@ -0,0 +1,117 @@
+{ appleDerivation', stdenv, darwin-stubs }:
+
+appleDerivation' stdenv {
+  phases = [ "unpackPhase" "installPhase" ];
+
+  __propagatedImpureHostDeps = [
+    "/System/Library/Frameworks/Security.framework/Security"
+    "/System/Library/Frameworks/Security.framework/Resources"
+    "/System/Library/Frameworks/Security.framework/PlugIns"
+    "/System/Library/Frameworks/Security.framework/XPCServices"
+    "/System/Library/Frameworks/Security.framework/Versions"
+  ];
+
+  installPhase = ''
+    mkdir -p $out/Library/Frameworks/Security.framework
+
+    ###### IMPURITIES
+    ln -s /System/Library/Frameworks/Security.framework/{Resources,Plugins,XPCServices} \
+      $out/Library/Frameworks/Security.framework
+
+    ###### STUBS
+    cp ${darwin-stubs}/System/Library/Frameworks/Security.framework/Versions/A/Security.tbd \
+      $out/Library/Frameworks/Security.framework
+
+    ###### HEADERS
+
+    export dest=$out/Library/Frameworks/Security.framework/Headers
+    mkdir -p $dest
+
+    cp libsecurity_asn1/lib/SecAsn1Coder.h     $dest
+    cp libsecurity_asn1/lib/SecAsn1Templates.h $dest
+    cp libsecurity_asn1/lib/SecAsn1Types.h     $dest
+    cp libsecurity_asn1/lib/oidsalg.h          $dest
+    cp libsecurity_asn1/lib/oidsattr.h         $dest
+
+    cp libsecurity_authorization/lib/AuthSession.h         $dest
+    cp libsecurity_authorization/lib/Authorization.h       $dest
+    cp libsecurity_authorization/lib/AuthorizationDB.h     $dest
+    cp libsecurity_authorization/lib/AuthorizationPlugin.h $dest
+    cp libsecurity_authorization/lib/AuthorizationTags.h   $dest
+
+    cp libsecurity_cms/lib/CMSDecoder.h $dest
+    cp libsecurity_cms/lib/CMSEncoder.h $dest
+
+    cp libsecurity_codesigning/lib/CSCommon.h       $dest
+    cp libsecurity_codesigning/lib/CodeSigning.h    $dest
+    cp libsecurity_codesigning/lib/SecCode.h        $dest
+    cp libsecurity_codesigning/lib/SecCodeHost.h    $dest
+    cp libsecurity_codesigning/lib/SecRequirement.h $dest
+    cp libsecurity_codesigning/lib/SecStaticCode.h  $dest
+    cp libsecurity_codesigning/lib/SecTask.h        $dest
+
+    cp libsecurity_cssm/lib/certextensions.h $dest
+    cp libsecurity_cssm/lib/cssm.h           $dest
+    cp libsecurity_cssm/lib/cssmaci.h        $dest
+    cp libsecurity_cssm/lib/cssmapi.h        $dest
+    cp libsecurity_cssm/lib/cssmapple.h      $dest
+    cp libsecurity_cssm/lib/cssmcli.h        $dest
+    cp libsecurity_cssm/lib/cssmconfig.h     $dest
+    cp libsecurity_cssm/lib/cssmcspi.h       $dest
+    cp libsecurity_cssm/lib/cssmdli.h        $dest
+    cp libsecurity_cssm/lib/cssmerr.h        $dest
+    cp libsecurity_cssm/lib/cssmkrapi.h      $dest
+    cp libsecurity_cssm/lib/cssmkrspi.h      $dest
+    cp libsecurity_cssm/lib/cssmspi.h        $dest
+    cp libsecurity_cssm/lib/cssmtpi.h        $dest
+    cp libsecurity_cssm/lib/cssmtype.h       $dest
+    cp libsecurity_cssm/lib/eisl.h           $dest
+    cp libsecurity_cssm/lib/emmspi.h         $dest
+    cp libsecurity_cssm/lib/emmtype.h        $dest
+    cp libsecurity_cssm/lib/oidsbase.h       $dest
+    cp libsecurity_cssm/lib/oidscert.h       $dest
+    cp libsecurity_cssm/lib/oidscrl.h        $dest
+    cp libsecurity_cssm/lib/x509defs.h       $dest
+
+    cp libsecurity_keychain/lib/SecACL.h                $dest
+    cp libsecurity_keychain/lib/SecAccess.h             $dest
+    cp libsecurity_keychain/lib/SecBase.h               $dest
+    cp libsecurity_keychain/lib/SecCertificate.h        $dest
+    cp libsecurity_keychain/lib/SecCertificatePriv.h    $dest # Private
+    cp libsecurity_keychain/lib/SecCertificateOIDs.h    $dest
+    cp libsecurity_keychain/lib/SecIdentity.h           $dest
+    cp libsecurity_keychain/lib/SecIdentitySearch.h     $dest
+    cp libsecurity_keychain/lib/SecImportExport.h       $dest
+    cp libsecurity_keychain/lib/SecItem.h               $dest
+    cp libsecurity_keychain/lib/SecKey.h                $dest
+    cp libsecurity_keychain/lib/SecKeychain.h           $dest
+    cp libsecurity_keychain/lib/SecKeychainItem.h       $dest
+    cp libsecurity_keychain/lib/SecKeychainSearch.h     $dest
+    cp libsecurity_keychain/lib/SecPolicy.h             $dest
+    cp libsecurity_keychain/lib/SecPolicySearch.h       $dest
+    cp libsecurity_keychain/lib/SecRandom.h             $dest
+    cp libsecurity_keychain/lib/SecTrust.h              $dest
+    cp libsecurity_keychain/lib/SecTrustSettings.h      $dest
+    cp libsecurity_keychain/lib/SecTrustedApplication.h $dest
+    cp libsecurity_keychain/lib/Security.h              $dest
+
+    cp libsecurity_manifest/lib/SecureDownload.h $dest
+
+    cp libsecurity_mds/lib/mds.h        $dest
+    cp libsecurity_mds/lib/mds_schema.h $dest
+
+    cp libsecurity_ssl/lib/CipherSuite.h     $dest
+    cp libsecurity_ssl/lib/SecureTransport.h $dest
+
+    cp libsecurity_transform/lib/SecCustomTransform.h        $dest
+    cp libsecurity_transform/lib/SecDecodeTransform.h        $dest
+    cp libsecurity_transform/lib/SecDigestTransform.h        $dest
+    cp libsecurity_transform/lib/SecEncodeTransform.h        $dest
+    cp libsecurity_transform/lib/SecEncryptTransform.h       $dest
+    cp libsecurity_transform/lib/SecReadTransform.h          $dest
+    cp libsecurity_transform/lib/SecSignVerifyTransform.h    $dest
+    cp libsecurity_transform/lib/SecTransform.h              $dest
+    cp libsecurity_transform/lib/SecTransformReadTransform.h $dest
+
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/Security/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Security/default.nix
@ -0,0 +1,19 @@
+{ appleDerivation, xcbuildHook, xpc, dtrace, xnu }:
+
+appleDerivation {
+  nativeBuildInputs = [ xcbuildHook dtrace ];
+  # buildInputs = [ Foundation xpc darling ];
+  buildInputs = [ xpc xnu ];
+
+  xcbuildFlags = [ "-target" "Security_frameworks_osx" ];
+
+  # NIX_CFLAGS_COMPILE = "-Wno-error -I${xnu}/include/libkern -DPRIVATE -I${xnu}/Library/Frameworks/System.framework/Headers";
+
+  preBuild = ''
+    dtrace -h -C -s OSX/libsecurity_utilities/lib/security_utilities.d -o OSX/libsecurity_utilities/lib/utilities_dtrace.h
+
+    xcodebuild SYMROOT=$PWD/Products OBJROOT=$PWD/Intermediates -target copyHeadersToSystem
+    NIX_CFLAGS_COMPILE+=" -F./Products/Release"
+    ln -s $PWD/Products/Release/Security.bundle/Contents $PWD/Products/Release/Security.framework
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/adv_cmds/boot.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/adv_cmds/boot.nix
@ -0,0 +1,92 @@
+{ lib, stdenv, buildPackages, appleDerivation, fetchzip, bsdmake, perl, flex, bison
+}:
+
+# this derivation sucks
+# locale data was removed after adv_cmds-118, so our base is that because it's easier than
+# replicating the bizarre bsdmake file structure
+#
+# sadly adv_cmds-118 builds a mklocale and colldef that generate files that our libc can no
+# longer understand
+#
+# the more recent adv_cmds release is used for everything else in this package
+
+let recentAdvCmds = fetchzip {
+  url = "https://opensource.apple.com/tarballs/adv_cmds/adv_cmds-158.tar.gz";
+  sha256 = "0z081kcprzg5jcvqivfnwvvv6wfxzkjg2jc2lagsf8c7j7vgm8nn";
+};
+
+in appleDerivation {
+  depsBuildBuild = [ buildPackages.stdenv.cc ];
+  nativeBuildInputs = [ bsdmake perl bison flex ];
+  buildInputs = [ flex ];
+
+  patchPhase = ''
+    substituteInPlace BSDmakefile \
+      --replace chgrp true \
+      --replace /Developer/Makefiles/bin/compress-man-pages.pl true \
+      --replace "ps.tproj" "" --replace "gencat.tproj" "" --replace "md.tproj" "" \
+      --replace "tabs.tproj" "" --replace "cap_mkdb.tproj" "" \
+      --replace "!= tconf --test TARGET_OS_EMBEDDED" "= NO"
+
+    substituteInPlace Makefile --replace perl true
+
+    for subproject in colldef mklocale monetdef msgdef numericdef timedef; do
+      substituteInPlace usr-share-locale.tproj/$subproject/BSDmakefile \
+        --replace /usr/share/locale "" \
+        --replace '-o ''${BINOWN} -g ''${BINGRP}' "" \
+        --replace "rsync -a" "cp -r"
+    done
+  '';
+
+  preBuild = ''
+    cp -r --no-preserve=all ${recentAdvCmds}/colldef .
+    pushd colldef
+    mv locale/collate.h .
+    flex -t -8 -i scan.l > scan.c
+    yacc -d parse.y
+    clang *.c -o colldef -lfl
+    popd
+    mv colldef/colldef colldef.tproj/colldef
+
+    cp -r --no-preserve=all ${recentAdvCmds}/mklocale .
+    pushd mklocale
+    flex -t -8 -i lex.l > lex.c
+    yacc -d yacc.y
+    clang *.c -o mklocale -lfl
+    popd
+    mv mklocale/mklocale mklocale.tproj/mklocale
+  '';
+
+  buildPhase = ''
+    runHook preBuild
+
+    bsdmake -C usr-share-locale.tproj
+
+    ${stdenv.cc.targetPrefix}clang ${recentAdvCmds}/ps/*.c -o ps
+  '';
+
+  installPhase = ''
+    bsdmake -C usr-share-locale.tproj install DESTDIR="$locale/share/locale"
+
+    # need to get rid of runtime dependency on flex
+    # install -d 0755 $locale/bin
+    # install -m 0755 colldef.tproj/colldef $locale/bin
+    # install -m 0755 mklocale.tproj/mklocale $locale/bin
+
+    install -d 0755 $ps/bin
+    install ps $ps/bin/ps
+    touch "$out"
+  '';
+
+  outputs = [
+    "out"
+    "ps"
+    "locale"
+  ];
+  setOutputFlags = false;
+
+  meta = {
+    platforms = lib.platforms.darwin;
+    maintainers = with lib.maintainers; [ gridaphobe ];
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/adv_cmds/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/adv_cmds/default.nix
@ -0,0 +1,51 @@
+{ lib, appleDerivation, xcbuild, ncurses, libutil }:
+
+appleDerivation {
+  # We can't just run the root build, because https://github.com/facebook/xcbuild/issues/264
+
+  patchPhase = ''
+    substituteInPlace adv_cmds.xcodeproj/project.pbxproj \
+      --replace '/usr/lib/libtermcap.dylib' 'libncurses.dylib'
+  '';
+
+  # pkill requires special private headers that are unavailable in
+  # NixPkgs. These ones are needed:
+  #  - xpc/xpxc.h
+  #  - os/base_private.h
+  #  - _simple.h
+  # We disable it here for now. TODO: build pkill inside adv_cmds
+  buildPhase = ''
+    targets=$(xcodebuild -list \
+                | awk '/Targets:/{p=1;print;next} p&&/^\s*$/{p=0};p' \
+                | tail -n +2 | sed 's/^[ \t]*//' \
+                | grep -v -e Desktop -e Embedded -e mklocale -e pkill -e pgrep -e colldef)
+
+    for i in $targets; do
+      xcodebuild SYMROOT=$PWD/Products OBJROOT=$PWD/Intermediates -target $i
+    done
+  '';
+
+  # temporary install phase until xcodebuild has "install" support
+  installPhase = ''
+    for f in Products/Release/*; do
+      if [ -f $f ]; then
+        install -D $f $out/bin/$(basename $f)
+      fi
+    done
+
+    mkdir -p $out/System/Library/LaunchDaemons
+    install fingerd/finger.plist $out/System/Library/LaunchDaemons
+
+    # from variant_links.sh
+    # ln -s $out/bin/pkill $out/bin/pgrep
+    # ln -s $out/share/man/man1/pkill.1 $out/share/man/man1/pgrep.1
+  '';
+
+  nativeBuildInputs = [ xcbuild ];
+  buildInputs = [ ncurses libutil ];
+
+  meta = {
+    platforms = lib.platforms.darwin;
+    maintainers = with lib.maintainers; [ matthewbauer ];
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/architecture/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/architecture/default.nix
@ -0,0 +1,39 @@
+{ lib, appleDerivation', stdenvNoCC }:
+
+appleDerivation' stdenvNoCC {
+  dontBuild = true;
+
+  postPatch = ''
+    substituteInPlace Makefile \
+        --replace '/bin/mkdir' 'mkdir' \
+        --replace '/usr/bin/install' 'install'
+  '';
+
+  installFlags = [ "EXPORT_DSTDIR=/include/architecture" ];
+
+  DSTROOT = "$(out)";
+
+  appleHeaders = ''
+    architecture/alignment.h
+    architecture/byte_order.h
+    architecture/i386/alignment.h
+    architecture/i386/asm_help.h
+    architecture/i386/byte_order.h
+    architecture/i386/cpu.h
+    architecture/i386/desc.h
+    architecture/i386/fpu.h
+    architecture/i386/frame.h
+    architecture/i386/io.h
+    architecture/i386/pio.h
+    architecture/i386/reg_help.h
+    architecture/i386/sel.h
+    architecture/i386/table.h
+    architecture/i386/tss.h
+  '';
+
+  meta = with lib; {
+    maintainers = with maintainers; [ copumpkin ];
+    platforms   = platforms.darwin;
+    license     = licenses.apsl20;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/basic_cmds/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/basic_cmds/default.nix
@ -0,0 +1,32 @@
+{ lib, appleDerivation, xcbuildHook }:
+
+appleDerivation {
+  nativeBuildInputs = [ xcbuildHook ];
+
+  # These PBXcp calls should be patched in xcbuild to allow them to
+  # automatically be prefixed.
+  patchPhase = ''
+    substituteInPlace basic_cmds.xcodeproj/project.pbxproj \
+      --replace "dstPath = /usr/share/man/man1;" "dstPath = $out/share/man/man1;" \
+      --replace "dstPath = /usr/share/man/man5;" "dstPath = $out/share/man/man5;"
+  '';
+
+  # temporary install phase until xcodebuild has "install" support
+  installPhase = ''
+    for f in Products/Release/*; do
+      if [ -f $f ]; then
+        install -D $f $out/bin/$(basename $f)
+      fi
+    done
+
+    for n in 1; do
+      mkdir -p $out/share/man/man$n
+      install */*.$n $out/share/man/man$n
+    done
+  '';
+
+  meta = {
+    platforms = lib.platforms.darwin;
+    maintainers = with lib.maintainers; [ matthewbauer ];
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/bootstrap_cmds/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/bootstrap_cmds/default.nix
@ -0,0 +1,43 @@
+{ lib, appleDerivation, stdenv, bison, flex }:
+
+let
+
+  # Hard to get CC to pull this off without infinite recursion
+  targetTargetPrefix = lib.optionalString
+    (with stdenv; hostPlatform != targetPlatform)
+    (stdenv.targetPlatform.config + "-");
+
+in
+
+appleDerivation {
+  nativeBuildInputs = [ bison flex ];
+
+  buildPhase = ''
+    cd migcom.tproj
+
+    # redundant file, don't know why apple not removing it.
+    rm handler.c
+
+    yacc -d parser.y
+    flex --header-file=lexxer.yy.h -o lexxer.yy.c lexxer.l
+
+    $CC -std=gnu99 -Os -dead_strip -DMIG_VERSION=\"$pname-$version\" -I. -o migcom *.c
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin $out/libexec $out/share/man/man1
+
+    chmod +x mig.sh
+    cp mig.sh   $out/bin/mig
+    cp migcom   $out/libexec
+    ln -s $out/libexec/migcom $out/bin/migcom
+    cp mig.1    $out/share/man/man1
+    cp migcom.1 $out/share/man/man1
+
+    substituteInPlace $out/bin/mig \
+      --replace 'arch=`/usr/bin/arch`' 'arch=${stdenv.targetPlatform.darwinArch}' \
+      --replace '/usr/bin/' "" \
+      --replace '/bin/rmdir' "rmdir" \
+      --replace 'C=''${MIGCC}' "C=${targetTargetPrefix}cc"
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/bsdmake/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/bsdmake/default.nix
@ -0,0 +1,49 @@
+{ lib, appleDerivation, makeWrapper }:
+
+appleDerivation {
+  nativeBuildInputs = [ makeWrapper ];
+
+  patchPhase = ''
+    substituteInPlace mk/bsd.prog.mk \
+      --replace '-o ''${BINOWN} -g ''${BINGRP}' "" \
+      --replace '-o ''${SCRIPTSOWN_''${.ALLSRC:T}}' "" \
+      --replace '-g ''${SCRIPTSGRP_''${.ALLSRC:T}}' ""
+    substituteInPlace mk/bsd.lib.mk --replace '-o ''${LIBOWN} -g ''${LIBGRP}' ""
+    substituteInPlace mk/bsd.info.mk --replace '-o ''${INFOOWN} -g ''${INFOGRP}' ""
+    substituteInPlace mk/bsd.doc.mk --replace '-o ''${BINOWN} -g ''${BINGRP}' ""
+    substituteInPlace mk/bsd.man.mk --replace '-o ''${MANOWN} -g ''${MANGRP}' ""
+    substituteInPlace mk/bsd.files.mk \
+      --replace '-o ''${''${group}OWN_''${.ALLSRC:T}}' "" \
+      --replace '-g ''${''${group}GRP_''${.ALLSRC:T}}' "" \
+      --replace '-o ''${''${group}OWN} -g ''${''${group}GRP}' ""
+    substituteInPlace mk/bsd.incs.mk \
+      --replace '-o ''${''${group}OWN_''${.ALLSRC:T}}' "" \
+      --replace '-g ''${''${group}GRP_''${.ALLSRC:T}}' "" \
+      --replace '-o ''${''${group}OWN} -g ''${''${group}GRP}' ""
+  '';
+
+  buildPhase = ''
+    objs=()
+    for file in $(find . -name '*.c'); do
+      obj="$(basename "$file" .c).o"
+      objs+=("$obj")
+      $CC -c "$file" -o "$obj" -DDEFSHELLNAME='"sh"' -D__FBSDID=__RCSID -mdynamic-no-pic -g
+    done
+    $CC "''${objs[@]}" -o bsdmake
+  '';
+
+  installPhase = ''
+    install -d 0644 $out/bin
+    install -m 0755 bsdmake $out/bin
+    install -d 0644 $out/share/mk
+    install -m 0755 mk/* $out/share/mk
+  '';
+
+  preFixup = ''
+    wrapProgram "$out/bin/bsdmake" --add-flags "-m $out/share/mk"
+  '';
+
+  meta = {
+    platforms = lib.platforms.darwin;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/configd/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/configd/default.nix
@ -0,0 +1,216 @@
+{ lib, stdenv, appleDerivation', launchd, bootstrap_cmds, xnu, ppp, IOKit, eap8021x, Security
+, headersOnly ? false }:
+
+appleDerivation' stdenv {
+  meta.broken = stdenv.cc.nativeLibc;
+
+  nativeBuildInputs = lib.optionals (!headersOnly) [ bootstrap_cmds ];
+  buildInputs = lib.optionals (!headersOnly) [ launchd ppp IOKit eap8021x ];
+
+  propagatedBuildInputs = lib.optionals (!headersOnly) [ Security ];
+
+  patchPhase = lib.optionalString (!headersOnly) ''
+    HACK=$PWD/hack
+    mkdir $HACK
+    cp -r ${xnu}/Library/Frameworks/System.framework/Versions/B/PrivateHeaders/net $HACK
+
+
+    substituteInPlace SystemConfiguration.fproj/SCNetworkReachabilityInternal.h \
+      --replace '#include <xpc/xpc.h>' ""
+
+    substituteInPlace SystemConfiguration.fproj/SCNetworkReachability.c \
+      --replace ''$'#define\tHAVE_VPN_STATUS' ""
+
+    substituteInPlace SystemConfiguration.fproj/reachability/SCNetworkReachabilityServer_client.c \
+      --replace '#include <xpc/xpc.h>' '#include "fake_xpc.h"' \
+      --replace '#include <xpc/private.h>' "" \
+
+    # Our neutered CoreFoundation doesn't have this function, but I think we'll live...
+    substituteInPlace SystemConfiguration.fproj/SCNetworkConnectionPrivate.c \
+      --replace 'CFPreferencesAppValueIsForced(serviceID, USER_PREFERENCES_APPLICATION_ID)' 'FALSE' \
+      --replace 'CFPreferencesAppValueIsForced(userPrivate->serviceID, USER_PREFERENCES_APPLICATION_ID)' 'FALSE'
+
+    cat >SystemConfiguration.fproj/fake_xpc.h <<EOF
+    typedef void *xpc_type_t;
+    typedef void *xpc_object_t;
+    typedef void *xpc_connection_t;
+
+    xpc_type_t xpc_get_type(xpc_object_t object);
+    xpc_object_t xpc_dictionary_create(const char * const *keys, const xpc_object_t *values, size_t count);
+    char *xpc_copy_description(xpc_object_t object);
+    int64_t  xpc_dictionary_get_int64(xpc_object_t xdict, const char *key);
+    uint64_t xpc_dictionary_get_uint64(xpc_object_t xdict, const char *key);
+    void xpc_connection_set_event_handler(xpc_connection_t connection, void *handler);
+
+    extern const struct _xpc_type_s _xpc_type_error;
+    #define XPC_TYPE_ERROR (&_xpc_type_error)
+
+    extern const struct _xpc_type_s _xpc_type_dictionary;
+    #define XPC_TYPE_DICTIONARY (&_xpc_type_dictionary)
+
+    extern const struct _xpc_type_s _xpc_type_array;
+    #define XPC_TYPE_ARRAY (&_xpc_type_array)
+
+    extern const struct _xpc_dictionary_s _xpc_error_connection_interrupted;
+    #define XPC_ERROR_CONNECTION_INTERRUPTED (&_xpc_error_connection_interrupted)
+
+    extern const struct _xpc_dictionary_s _xpc_error_connection_invalid;
+    #define XPC_ERROR_CONNECTION_INVALID (&_xpc_error_connection_invalid)
+
+    extern const char *const _xpc_error_key_description;
+    #define XPC_ERROR_KEY_DESCRIPTION _xpc_error_key_description
+
+    #define XPC_CONNECTION_MACH_SERVICE_PRIVILEGED (1 << 1)
+    EOF
+  '';
+
+  dontBuild = headersOnly;
+
+  buildPhase = ''
+    pushd SystemConfiguration.fproj >/dev/null
+
+    mkdir -p SystemConfiguration.framework/Resources
+    cp ../get-mobility-info       SystemConfiguration.framework/Resources
+    cp Info.plist                 SystemConfiguration.framework/Resources
+    cp -r English.lproj           SystemConfiguration.framework/Resources
+    cp NetworkConfiguration.plist SystemConfiguration.framework/Resources
+
+    mkdir -p SystemConfiguration.framework/Headers
+    mkdir -p SystemConfiguration.framework/PrivateHeaders
+
+    # The standard public headers
+    cp SCSchemaDefinitions.h        SystemConfiguration.framework/Headers
+    cp SystemConfiguration.h        SystemConfiguration.framework/Headers
+    cp SCDynamicStore.h             SystemConfiguration.framework/Headers
+    cp SCDynamicStoreCopySpecific.h SystemConfiguration.framework/Headers
+    cp SCPreferences.h              SystemConfiguration.framework/Headers
+    cp CaptiveNetwork.h             SystemConfiguration.framework/Headers
+    cp SCPreferencesPath.h          SystemConfiguration.framework/Headers
+    cp SCDynamicStoreKey.h          SystemConfiguration.framework/Headers
+    cp SCPreferencesSetSpecific.h   SystemConfiguration.framework/Headers
+    cp SCNetworkConfiguration.h     SystemConfiguration.framework/Headers
+    cp SCNetworkConnection.h        SystemConfiguration.framework/Headers
+    cp SCNetworkReachability.h      SystemConfiguration.framework/Headers
+    cp DHCPClientPreferences.h      SystemConfiguration.framework/Headers
+    cp SCNetwork.h                  SystemConfiguration.framework/Headers
+    cp SCDynamicStoreCopyDHCPInfo.h SystemConfiguration.framework/Headers
+
+    # TODO: Do we want to preserve private headers or just make them public?
+    cp SCDPlugin.h                         SystemConfiguration.framework/PrivateHeaders
+    cp SCPrivate.h                         SystemConfiguration.framework/PrivateHeaders
+    cp SCDynamicStorePrivate.h             SystemConfiguration.framework/PrivateHeaders
+    cp SCDynamicStoreCopySpecificPrivate.h SystemConfiguration.framework/PrivateHeaders
+    cp SCDynamicStoreSetSpecificPrivate.h  SystemConfiguration.framework/PrivateHeaders
+    cp SCValidation.h                      SystemConfiguration.framework/PrivateHeaders
+    cp SCPreferencesPrivate.h              SystemConfiguration.framework/PrivateHeaders
+    cp DeviceOnHold.h                      SystemConfiguration.framework/PrivateHeaders
+    cp LinkConfiguration.h                 SystemConfiguration.framework/PrivateHeaders
+    cp SCPreferencesPathKey.h              SystemConfiguration.framework/PrivateHeaders
+    cp SCPreferencesSetSpecificPrivate.h   SystemConfiguration.framework/PrivateHeaders
+    cp SCNetworkConnectionPrivate.h        SystemConfiguration.framework/PrivateHeaders
+    cp SCPreferencesGetSpecificPrivate.h   SystemConfiguration.framework/PrivateHeaders
+    cp SCSchemaDefinitionsPrivate.h        SystemConfiguration.framework/PrivateHeaders
+    cp SCNetworkConfigurationPrivate.h     SystemConfiguration.framework/PrivateHeaders
+    cp SCPreferencesKeychainPrivate.h      SystemConfiguration.framework/PrivateHeaders
+    cp SCNetworkSignature.h                SystemConfiguration.framework/PrivateHeaders
+    cp SCNetworkSignaturePrivate.h         SystemConfiguration.framework/PrivateHeaders
+    cp VPNPrivate.h                        SystemConfiguration.framework/PrivateHeaders
+    cp VPNConfiguration.h                  SystemConfiguration.framework/PrivateHeaders
+    cp VPNTunnelPrivate.h                  SystemConfiguration.framework/PrivateHeaders
+    cp VPNTunnel.h                         SystemConfiguration.framework/PrivateHeaders
+
+    mkdir derived
+
+    cat >derived/SystemConfiguration_vers.c <<EOF
+    const unsigned char SystemConfigurationVersionString[] __attribute__ ((used)) = "@(#)PROGRAM:SystemConfiguration  PROJECT:configd-" "\n"; const double SystemConfigurationVersionNumber __attribute__ ((used)) = (double)0.;
+    EOF
+
+    mig -arch x86_64 -header derived/shared_dns_info.h -user derived/shared_dns_infoUser.c -sheader /dev/null -server /dev/null ../dnsinfo/shared_dns_info.defs
+    mig -arch x86_64 -header derived/config.h          -user derived/configUser.c          -sheader /dev/null -server /dev/null config.defs
+    mig -arch x86_64 -header derived/helper.h          -user derived/helperUser.c          -sheader /dev/null -server /dev/null helper/helper.defs
+    mig -arch x86_64 -header derived/pppcontroller.h   -user derived/pppcontrollerUser.c   -sheader /dev/null -server /dev/null pppcontroller.defs
+
+    $CC -I. -Ihelper -Iderived -F. -c SCSchemaDefinitions.c -o SCSchemaDefinitions.o
+    $CC -I. -Ihelper -Iderived -F. -c SCD.c -o SCD.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDKeys.c -o SCDKeys.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDPrivate.c -o SCDPrivate.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDPlugin.c -o SCDPlugin.o
+    $CC -I. -Ihelper -Iderived -F. -c CaptiveNetwork.c -o CaptiveNetwork.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDOpen.c -o SCDOpen.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDList.c -o SCDList.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDAdd.c -o SCDAdd.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDGet.c -o SCDGet.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDSet.c -o SCDSet.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDRemove.c -o SCDRemove.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDNotify.c -o SCDNotify.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDNotifierSetKeys.c -o SCDNotifierSetKeys.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDNotifierAdd.c -o SCDNotifierAdd.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDNotifierRemove.c -o SCDNotifierRemove.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDNotifierGetChanges.c -o SCDNotifierGetChanges.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDNotifierWait.c -o SCDNotifierWait.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDNotifierInformViaCallback.c -o SCDNotifierInformViaCallback.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDNotifierInformViaFD.c -o SCDNotifierInformViaFD.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDNotifierInformViaSignal.c -o SCDNotifierInformViaSignal.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDNotifierCancel.c -o SCDNotifierCancel.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDSnapshot.c -o SCDSnapshot.o
+    $CC -I. -Ihelper -Iderived -F. -c SCP.c -o SCP.o
+    $CC -I. -Ihelper -Iderived -F. -c SCPOpen.c -o SCPOpen.o
+    $CC -I. -Ihelper -Iderived -F. -c SCPLock.c -o SCPLock.o
+    $CC -I. -Ihelper -Iderived -F. -c SCPUnlock.c -o SCPUnlock.o
+    $CC -I. -Ihelper -Iderived -F. -c SCPList.c -o SCPList.o
+    $CC -I. -Ihelper -Iderived -F. -c SCPGet.c -o SCPGet.o
+    $CC -I. -Ihelper -Iderived -F. -c SCPAdd.c -o SCPAdd.o
+    $CC -I. -Ihelper -Iderived -F. -c SCPSet.c -o SCPSet.o
+    $CC -I. -Ihelper -Iderived -F. -c SCPRemove.c -o SCPRemove.o
+    $CC -I. -Ihelper -Iderived -F. -c SCPCommit.c -o SCPCommit.o
+    $CC -I. -Ihelper -Iderived -F. -c SCPApply.c -o SCPApply.o
+    $CC -I. -Ihelper -Iderived -F. -c SCPPath.c -o SCPPath.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDConsoleUser.c -o SCDConsoleUser.o
+    $CC -I. -Ihelper -Iderived -F. -c SCDHostName.c -o SCDHostName.o
+    $CC -I. -Ihelper -Iderived -F. -c SCLocation.c -o SCLocation.o
+    $CC -I. -Ihelper -Iderived -F. -c SCNetwork.c -o SCNetwork.o
+    $CC -I. -Ihelper -Iderived -F. -c derived/pppcontrollerUser.c -o pppcontrollerUser.o
+    $CC -I. -Ihelper -Iderived -F. -c SCNetworkConnection.c -o SCNetworkConnection.o
+    $CC -I. -Ihelper -Iderived -F. -c SCNetworkConnectionPrivate.c -o SCNetworkConnectionPrivate.o
+    $CC -I. -Ihelper -Iderived -I../dnsinfo -F. -c SCNetworkReachability.c -o SCNetworkReachability.o
+    $CC -I. -Ihelper -Iderived -F. -c SCProxies.c -o SCProxies.o
+    $CC -I. -Ihelper -Iderived -F. -c DHCP.c -o DHCP.o
+    $CC -I. -Ihelper -Iderived -F. -c moh.c -o moh.o
+    $CC -I. -Ihelper -Iderived -F. -c DeviceOnHold.c -o DeviceOnHold.o
+    $CC -I. -Ihelper -Iderived -I $HACK -F. -c LinkConfiguration.c -o LinkConfiguration.o
+    $CC -I. -Ihelper -Iderived -F. -c dy_framework.c -o dy_framework.o
+    $CC -I. -Ihelper -Iderived -I $HACK -F. -c VLANConfiguration.c -o VLANConfiguration.o
+    $CC -I. -Ihelper -Iderived -F. -c derived/configUser.c -o configUser.o
+    $CC -I. -Ihelper -Iderived -F. -c SCPreferencesPathKey.c -o SCPreferencesPathKey.o
+    $CC -I. -Ihelper -Iderived -I../dnsinfo -F. -c derived/shared_dns_infoUser.c -o shared_dns_infoUser.o
+    $CC -I. -Ihelper -Iderived -F. -c SCNetworkConfigurationInternal.c -o SCNetworkConfigurationInternal.o
+    $CC -I. -Ihelper -Iderived -F. -c SCNetworkInterface.c -o SCNetworkInterface.o
+    $CC -I. -Ihelper -Iderived -F. -c SCNetworkProtocol.c -o SCNetworkProtocol.o
+    $CC -I. -Ihelper -Iderived -F. -c SCNetworkService.c -o SCNetworkService.o
+    $CC -I. -Ihelper -Iderived -F. -c SCNetworkSet.c -o SCNetworkSet.o
+    $CC -I. -Ihelper -Iderived -I $HACK -F. -c BondConfiguration.c -o BondConfiguration.o
+    $CC -I. -Ihelper -Iderived -I $HACK -F. -c BridgeConfiguration.c -o BridgeConfiguration.o
+    $CC -I. -Ihelper -Iderived -F. -c helper/SCHelper_client.c -o SCHelper_client.o
+    $CC -I. -Ihelper -Iderived -F. -c SCPreferencesKeychainPrivate.c -o SCPreferencesKeychainPrivate.o
+    $CC -I. -Ihelper -Iderived -F. -c SCNetworkSignature.c -o SCNetworkSignature.o
+    $CC -I. -Ihelper -Iderived -F. -c VPNPrivate.c -o VPNPrivate.o
+    $CC -I. -Ihelper -Iderived -F. -c VPNConfiguration.c -o VPNConfiguration.o
+    $CC -I. -Ihelper -Iderived -F. -c VPNTunnel.c -o VPNTunnel.o
+    $CC -I. -Ihelper -Iderived -F. -c derived/helperUser.c -o helperUser.o
+    $CC -I. -Ihelper -Iderived -F. -c reachability/SCNetworkReachabilityServer_client.c -o SCNetworkReachabilityServer_client.o
+    $CC -I. -Ihelper -Iderived -F. -c reachability/rb.c -o rb.o
+    $CC -I. -Ihelper -Iderived -F. -c derived/SystemConfiguration_vers.c -o SystemConfiguration_vers.o
+
+    $CC -dynamiclib *.o -install_name $out/Library/Frameworks/SystemConfiguration.framework/SystemConfiguration -dead_strip -framework CoreFoundation -single_module -o SystemConfiguration.framework/SystemConfiguration
+
+    popd >/dev/null
+  '';
+
+  installPhase = ''
+    mkdir -p $out/include
+    cp dnsinfo/*.h $out/include/
+  '' + lib.optionalString (!headersOnly) ''
+    mkdir -p $out/Library/Frameworks/
+    mv SystemConfiguration.fproj/SystemConfiguration.framework $out/Library/Frameworks
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/copyfile/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/copyfile/default.nix
@ -0,0 +1,9 @@
+{ appleDerivation', stdenvNoCC }:
+
+appleDerivation' stdenvNoCC {
+  dontBuild = true;
+  installPhase = ''
+    mkdir -p $out/include/
+    cp copyfile.h $out/include/
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/default.nix
@ -0,0 +1,315 @@
+{ lib, stdenv, fetchurl, fetchzip, pkgs }:
+
+let
+  # This attrset can in theory be computed automatically, but for that to work nicely we need
+  # import-from-derivation to work properly. Currently it's rather ugly when we try to bootstrap
+  # a stdenv out of something like this. With some care we can probably get rid of this, but for
+  # now it's staying here.
+  versions = {
+    "osx-10.12.6" = {
+      xnu           = "3789.70.16";
+      libiconv      = "50";
+      Libnotify     = "165.20.1";
+      objc4         = "709.1";
+      dyld          = "433.5";
+      CommonCrypto  = "60092.50.5";
+      copyfile      = "138";
+      ppp           = "838.50.1";
+      libclosure    = "67";
+      Libinfo       = "503.50.4";
+      Libsystem     = "1238.60.2";
+      removefile    = "45";
+      libresolv     = "64";
+      libplatform   = "126.50.8";
+      mDNSResponder = "765.50.9";
+      libutil       = "47.30.1";
+      libunwind     = "35.3";
+      Libc          = "1158.50.2";
+      dtrace        = "209.50.12";
+      libpthread    = "218.60.3";
+      hfs           = "366.70.1";
+    };
+    "osx-10.11.6" = {
+      PowerManagement = "572.50.1";
+      dtrace        = "168";
+      xnu           = "3248.60.10";
+      libpthread    = "138.10.4";
+      libiconv      = "44";
+      Libnotify     = "150.40.1";
+      objc4         = "680";
+      eap8021x      = "222.40.1";
+      dyld          = "360.22";
+      architecture  = "268";
+      CommonCrypto  = "60075.50.1";
+      copyfile      = "127";
+      Csu           = "85";
+      ppp           = "809.50.2";
+      libclosure    = "65";
+      Libinfo       = "477.50.4";
+      Libsystem     = "1226.10.1";
+      removefile    = "41";
+      libresolv     = "60";
+
+      # Their release page is a bit of a mess here, so I'm going to lie a bit and say this version
+      # is the right one, even though it isn't. The version I have here doesn't appear to be linked
+      # to any OS releases, but Apple also doesn't mention mDNSResponder from 10.11 to 10.11.6, and
+      # neither of those versions are publicly available.
+      libplatform   = "125";
+      mDNSResponder = "625.41.2";
+
+      # IOKit contains a set of packages with different versions, so we don't have a general version
+      IOKit         = "";
+
+      libutil       = "43";
+      libunwind     = "35.3";
+      Librpcsvc     = "26";
+      developer_cmds= "62";
+      network_cmds  = "481.20.1";
+      basic_cmds    = "55";
+      adv_cmds      = "163";
+      file_cmds     = "264.1.1";
+      shell_cmds    = "187";
+      system_cmds   = "550.6";
+      diskdev_cmds   = "593";
+      top           = "108";
+      text_cmds     = "99";
+    };
+    "osx-10.11.5" = {
+      Libc          = "1082.50.1"; # 10.11.6 still unreleased :/
+    };
+    "osx-10.10.5" = {
+      adv_cmds      = "158";
+      CF            = "1153.18";
+      ICU           = "531.48";
+      libdispatch   = "442.1.4";
+      Security      = "57031.40.6";
+
+      IOAudioFamily                        = "203.3";
+      IOFireWireFamily                     = "458";
+      IOFWDVComponents                     = "207.4.1";
+      IOFireWireAVC                        = "423";
+      IOFireWireSBP2                       = "427";
+      IOFireWireSerialBusProtocolTransport = "251.0.1";
+      IOGraphics                           = "485.40.1";
+      IOHIDFamily                          = "606.40.1";
+      IONetworkingFamily                   = "101";
+      IOSerialFamily                       = "74.20.1";
+      IOStorageFamily                      = "182.1.1";
+      IOBDStorageFamily                    = "14";
+      IOCDStorageFamily                    = "51";
+      IODVDStorageFamily                   = "35";
+      IOKitUser                            = "1050.20.2";
+    };
+    "osx-10.9.5" = {
+      launchd            = "842.92.1";
+      libauto            = "185.5";
+      Libc               = "997.90.3"; # We use this, but not from here
+      Libsystem          = "1197.1.1";
+      Security           = "55471.14.18";
+      security_dotmac_tp = "55107.1";
+
+      IOStorageFamily = "172";
+    };
+    "osx-10.8.5" = {
+      configd     = "453.19";
+      Libc        = "825.40.1";
+      IOUSBFamily = "630.4.5";
+    };
+    "osx-10.8.4" = {
+      IOUSBFamily = "560.4.2";
+    };
+    "osx-10.7.4" = {
+      Libm = "2026";
+    };
+    "osx-10.6.2" = {
+      CarbonHeaders = "18.1";
+    };
+    "osx-10.5.8" = {
+      adv_cmds = "119";
+    };
+    "dev-tools-7.0" = {
+      bootstrap_cmds = "93";
+    };
+    "dev-tools-5.1" = {
+      bootstrap_cmds = "86";
+    };
+    "dev-tools-3.2.6" = {
+      bsdmake = "24";
+    };
+  };
+
+  fetchApple' = pname: version: sha256: let
+    # When cross-compiling, fetchurl depends on libiconv, resulting
+    # in an infinite recursion without this. It's not clear why this
+    # worked fine when not cross-compiling
+    fetch = if pname == "libiconv"
+      then stdenv.fetchurlBoot
+      else fetchurl;
+  in fetch {
+    url = "http://www.opensource.apple.com/tarballs/${pname}/${pname}-${version}.tar.gz";
+    inherit sha256;
+  };
+
+  fetchApple = sdkName: sha256: pname: let
+    version = versions.${sdkName}.${pname};
+  in fetchApple' pname version sha256;
+
+  appleDerivation'' = stdenv: pname: version: sdkName: sha256: attrs: stdenv.mkDerivation ({
+    inherit pname version;
+
+    src = if attrs ? srcs then null else (fetchApple' pname version sha256);
+
+    enableParallelBuilding = true;
+
+    # In rare cases, APPLE may drop some headers quietly on new release.
+    doInstallCheck = attrs ? appleHeaders;
+    passAsFile = [ "appleHeaders" ];
+    installCheckPhase = ''
+      cd $out/include
+
+      result=$(diff -u "$appleHeadersPath" <(find * -type f | sort) --label "Listed in appleHeaders" --label "Found in \$out/include" || true)
+
+      if [ -z "$result" ]; then
+        echo "Apple header list is matched."
+      else
+        echo >&2 "\
+      Apple header list is inconsistent, please ensure no header file is unexpectedly dropped.
+      $result
+      "
+        exit 1
+      fi
+    '';
+
+  } // attrs // {
+    meta = (with lib; {
+      platforms = platforms.darwin;
+      license = licenses.apsl20;
+    }) // (attrs.meta or {});
+  });
+
+  IOKitSpecs = {
+    IOAudioFamily                        = fetchApple "osx-10.10.5" "0ggq7za3iq8g02j16rj67prqhrw828jsw3ah3bxq8a1cvr55aqnq";
+    IOFireWireFamily                     = fetchApple "osx-10.10.5" "059qa1m668kwvchl90cqcx35b31zaqdg61zi11y1imn5s389y2g1";
+    IOFWDVComponents                     = fetchApple "osx-10.10.5" "1brr0yn6mxgapw3bvlhyissfksifzj2mqsvj9vmps6zwcsxjfw7m";
+    IOFireWireAVC                        = fetchApple "osx-10.10.5" "194an37gbqs9s5s891lmw6prvd1m2362602s8lj5m89fp9h8mbal";
+    IOFireWireSBP2                       = fetchApple "osx-10.10.5" "1mym158kp46y1vfiq625b15ihh4jjbpimfm7d56wlw6l2syajqvi";
+    IOFireWireSerialBusProtocolTransport = fetchApple "osx-10.10.5" "09kiq907qpk94zbij1mrcfcnyyc5ncvlxavxjrj4v5braxm78lhi";
+    IOGraphics                           = fetchApple "osx-10.10.5" "1z0x3yrv0p8pfdqnvwf8rvrf9wip593lhm9q6yzbclz3fn53ad0p";
+    IOHIDFamily                          = fetchApple "osx-10.10.5" "0yibagwk74imp3j3skjycm703s5ybdqw0qlsmnml6zwjpbrz5894";
+    IONetworkingFamily                   = fetchApple "osx-10.10.5" "04as1hc8avncijf61mp9dmplz8vb1inhirkd1g74gah08lgrfs9j";
+    IOSerialFamily                       = fetchApple "osx-10.10.5" "0jh12aanxcigqi9w6wqzbwjdin9m48zwrhdj3n4ki0h41sg89y91";
+    IOStorageFamily                      = fetchApple "osx-10.9.5"  "0w5yr8ppl82anwph2zba0ppjji6ipf5x410zhcm1drzwn4bbkxrj";
+    IOBDStorageFamily                    = fetchApple "osx-10.10.5" "1rbvmh311n853j5qb6hfda94vym9wkws5w736w2r7dwbrjyppc1q";
+    IOCDStorageFamily                    = fetchApple "osx-10.10.5" "1905sxwmpxdcnm6yggklc5zimx1558ygm3ycj6b34f9h48xfxzgy";
+    IODVDStorageFamily                   = fetchApple "osx-10.10.5" "1fv82rn199mi998l41c0qpnlp3irhqp2rb7v53pxbx7cra4zx3i6";
+    # There should be an IOStreamFamily project here, but they haven't released it :(
+    IOUSBFamily                          = fetchApple "osx-10.8.5"  "1znqb6frxgab9mkyv7csa08c26p9p0ip6hqb4wm9c7j85kf71f4j"; # This is from 10.8 :(
+    IOUSBFamily_older                    = fetchApple "osx-10.8.4"  "113lmpz8n6sibd27p42h8bl7a6c3myc6zngwri7gnvf8qlajzyml" "IOUSBFamily"; # This is even older :(
+    IOKitUser                            = fetchApple "osx-10.10.5" "1jzndziv97bhjxmla8nib5fpcswbvsxr04447g251ls81rw313lb";
+    # There should be an IOVideo here, but they haven't released it :(
+  };
+
+  IOKitSrcs = lib.mapAttrs (name: value: if lib.isFunction value then value name else value) IOKitSpecs;
+
+in
+
+# darwin package set
+self:
+
+let
+  macosPackages_11_0_1 = import ./macos-11.0.1.nix { inherit applePackage'; };
+  developerToolsPackages_11_3_1 = import ./developer-tools-11.3.1.nix { inherit applePackage'; };
+
+  applePackage' = namePath: version: sdkName: sha256:
+    let
+      pname = builtins.head (lib.splitString "/" namePath);
+      appleDerivation' = stdenv: appleDerivation'' stdenv pname version sdkName sha256;
+      appleDerivation = appleDerivation' stdenv;
+      callPackage = self.newScope { inherit appleDerivation' appleDerivation; };
+    in callPackage (./. + "/${namePath}");
+
+  applePackage = namePath: sdkName: sha256: let
+    pname = builtins.head (lib.splitString "/" namePath);
+    version = versions.${sdkName}.${pname};
+  in applePackage' namePath version sdkName sha256;
+
+  # Only used for bootstrapping. It’s convenient because it was the last version to come with a real makefile.
+  adv_cmds-boot = applePackage "adv_cmds/boot.nix" "osx-10.5.8" "102ssayxbg9wb35mdmhswbnw0bg7js3pfd8fcbic83c5q3bqa6c6" {};
+
+in
+
+developerToolsPackages_11_3_1 // macosPackages_11_0_1 // {
+    # TODO: shorten this list, we should cut down to a minimum set of bootstrap or necessary packages here.
+
+    inherit (adv_cmds-boot) ps locale;
+    architecture    = applePackage "architecture"      "osx-10.11.6"     "1pbpjcd7is69hn8y29i98ci0byik826if8gnp824ha92h90w0fq3" {};
+    bsdmake         = applePackage "bsdmake"           "dev-tools-3.2.6" "11a9kkhz5bfgi1i8kpdkis78lhc6b5vxmhd598fcdgra1jw4iac2" {};
+    CarbonHeaders   = applePackage "CarbonHeaders"     "osx-10.6.2"      "1zam29847cxr6y9rnl76zqmkbac53nx0szmqm9w5p469a6wzjqar" {};
+    CommonCrypto    = applePackage "CommonCrypto"      "osx-10.12.6"     "0sgsqjcxbdm2g2zfpc50mzmk4b4ldyw7xvvkwiayhpczg1fga4ff" {};
+    configd         = applePackage "configd"           "osx-10.8.5"      "1gxakahk8gallf16xmhxhprdxkh3prrmzxnmxfvj0slr0939mmr2" {
+      Security      = applePackage "Security/boot.nix" "osx-10.9.5"      "1nv0dczf67dhk17hscx52izgdcyacgyy12ag0jh6nl5hmfzsn8yy" {};
+    };
+    copyfile        = applePackage "copyfile"          "osx-10.12.6"     "0a70bvzndkava1a946cdq42lnjhg7i7b5alpii3lap6r5fkvas0n" {};
+    Csu             = applePackage "Csu"               "osx-10.11.6"     "0yh5mslyx28xzpv8qww14infkylvc1ssi57imhi471fs91sisagj" {};
+    dtrace          = applePackage "dtrace"            "osx-10.12.6"     "0hpd6348av463yqf70n3xkygwmf1i5zza8kps4zys52sviqz3a0l" {};
+    dyld            = applePackage "dyld"              "osx-10.12.6"     "0q4jmk78b5ajn33blh4agyq6v2a63lpb3fln78az0dy12bnp1qqk" {};
+    eap8021x        = applePackage "eap8021x"          "osx-10.11.6"     "0iw0qdib59hihyx2275rwq507bq2a06gaj8db4a8z1rkaj1frskh" {};
+    IOKit           = applePackage "IOKit"             "osx-10.11.6"     "0kcbrlyxcyirvg5p95hjd9k8a01k161zg0bsfgfhkb90kh2s8x00" { inherit IOKitSrcs; };
+    launchd         = applePackage "launchd"           "osx-10.9.5"      "0w30hvwqq8j5n90s3qyp0fccxflvrmmjnicjri4i1vd2g196jdgj" {};
+    libauto         = applePackage "libauto"           "osx-10.9.5"      "17z27yq5d7zfkwr49r7f0vn9pxvj95884sd2k6lq6rfaz9gxqhy3" {};
+    Libc            = applePackage "Libc"              "osx-10.12.6"     "183wcy1nlj2wkpfsx3k3lyv917mk8r2p72qw8lb89mbjsw3yw0xx" {
+      Libc_10-9 = fetchzip {
+        url    = "http://www.opensource.apple.com/tarballs/Libc/Libc-997.90.3.tar.gz";
+        sha256 = "1xchgxkxg5288r2b9yfrqji2gsgdap92k4wx2dbjwslixws12pq7";
+      };
+      Libc_old        = applePackage "Libc/825_40_1.nix" "osx-10.8.5"      "0xsx1im52gwlmcrv4lnhhhn9dyk5ci6g27k6yvibn9vj8fzjxwcf" {};
+    };
+    libclosure      = applePackage "libclosure"        "osx-10.11.6"     "1zqy1zvra46cmqv6vsf1mcsz3a76r9bky145phfwh4ab6y15vjpq" {};
+    libdispatch     = applePackage "libdispatch"       "osx-10.10.5"     "0jsfbzp87lwk9snlby0hd4zvj7j894p5q3cw0wdx9ny1mcp3kdcj" {};
+    libiconv        = applePackage "libiconv"          "osx-10.12.6"     "1gg5h6z8sk851bhv87vyxzs54jmqz6lh57ny8j4s51j7srja0nly" {};
+    Libinfo         = applePackage "Libinfo"           "osx-10.11.6"     "0qjgkd4y8sjvwjzv5wwyzkb61pg8wwg95bkp721dgzv119dqhr8x" {};
+    Libm            = applePackage "Libm"              "osx-10.7.4"      "02sd82ig2jvvyyfschmb4gpz6psnizri8sh6i982v341x6y4ysl7" {};
+    Libnotify       = applePackage "Libnotify"         "osx-10.12.6"     "0p5qhvalf6j1w6n8xwywhn6dvbpzv74q5wqrgs8rwfpf74wg6s9z" {};
+    libplatform     = applePackage "libplatform"       "osx-10.12.6"     "0rh1f5ybvwz8s0nwfar8s0fh7jbgwqcy903cv2x8m15iq1x599yn" {};
+    libpthread      = applePackage "libpthread"        "osx-10.12.6"     "1j6541rcgjpas1fc77ip5krjgw4bvz6jq7bq7h9q7axb0jv2ns6c" {};
+    libresolv       = applePackage "libresolv"         "osx-10.12.6"     "077j6ljfh7amqpk2146rr7dsz5vasvr3als830mgv5jzl7l6vz88" {};
+    Libsystem       = applePackage "Libsystem"         "osx-10.12.6"     "1082ircc1ggaq3wha218vmfa75jqdaqidsy1bmrc4ckfkbr3bwx2" {};
+    libutil         = applePackage "libutil"           "osx-10.12.6"     "0lqdxaj82h8yjbjm856jjz9k2d96k0viimi881akfng08xk1246y" {};
+    libunwind       = applePackage "libunwind"         "osx-10.12.6"     "0miffaa41cv0lzf8az5k1j1ng8jvqvxcr4qrlkf3xyj479arbk1b" {};
+    mDNSResponder   = applePackage "mDNSResponder"     "osx-10.12.6"     "02ms1p8zlgmprzn65jzr7yaqxykh3zxjcrw0c06aayim6h0dsqfy" {};
+    objc4           = applePackage "objc4"             "osx-10.12.6"     "1cj1vhbcs9pkmag2ms8wslagicnq9bxi2qjkszmp3ys7z7ccrbwz" {};
+    ppp             = applePackage "ppp"               "osx-10.12.6"     "1kcc2nc4x1kf8sz0a23i6nfpvxg381kipi0qdisrp8x9z2gbkxb8" {};
+    removefile      = applePackage "removefile"        "osx-10.12.6"     "0jzjxbmxgjzhssqd50z7kq9dlwrv5fsdshh57c0f8mdwcs19bsyx" {};
+    xnu             = applePackage "xnu"               "osx-10.12.6"     "1sjb0i7qzz840v2h4z3s4jyjisad4r5yyi6sg8pakv3wd81i5fg5" {
+      python3 = pkgs.buildPackages.buildPackages.python3; # TODO(@Ericson2314) this shouldn't be needed.
+    };
+    hfs             = applePackage "hfs"               "osx-10.12.6"     "1mj3xvqpq1mgd80b6kl1s04knqnap7hccr0gz8rjphalq14rbl5g" {};
+    Librpcsvc       = applePackage "Librpcsvc"         "osx-10.11.6"     "1zwfwcl9irxl1dlnf2b4v30vdybp0p0r6n6g1pd14zbdci1jcg2k" {};
+    adv_cmds        = applePackage "adv_cmds"          "osx-10.11.6"    "12gbv35i09aij9g90p6b3x2f3ramw43qcb2gjrg8lzkzmwvcyw9q" {};
+    basic_cmds      = applePackage "basic_cmds"        "osx-10.11.6"     "0hvab4b1v5q2x134hdkal0rmz5gsdqyki1vb0dbw4py1bqf0yaw9" {};
+    developer_cmds  = applePackage "developer_cmds"    "osx-10.11.6"     "1r9c2b6dcl22diqf90x58psvz797d3lxh4r2wppr7lldgbgn24di" {};
+    diskdev_cmds    = applePackage "diskdev_cmds"      "osx-10.11.6"     "1ssdyiaq5m1zfy96yy38yyknp682ki6bvabdqd5z18fa0rv3m2ar" {
+      macosPackages_11_0_1 = macosPackages_11_0_1;
+    };
+    network_cmds    = applePackage "network_cmds"      "osx-10.11.6"     "0lhi9wz84qr1r2ab3fb4nvmdg9gxn817n5ldg7zw9gnf3wwn42kw" {};
+    file_cmds       = applePackage "file_cmds"         "osx-10.11.6"     "1zfxbmasps529pnfdjvc13p7ws2cfx8pidkplypkswyff0nff4wp" {};
+    shell_cmds      = applePackage "shell_cmds"        "osx-10.11.6"     "0084k271v66h4jqp7q7rmjvv7w4mvhx3aq860qs8jbd30canm86n" {};
+    system_cmds     = applePackage "system_cmds"       "osx-10.11.6"     "1h46j2c5v02pkv5d9fyv6cpgyg0lczvwicrx6r9s210cl03l77jl" {};
+    text_cmds       = applePackage "text_cmds"         "osx-10.11.6"     "1f93m7dd0ghqb2hwh905mjhzblyfr7dwffw98xhgmv1mfdnigxg0" {};
+    top             = applePackage "top"               "osx-10.11.6"     "0i9120rfwapgwdvjbfg0ya143i29s1m8zbddsxh39pdc59xnsg5l" {};
+    PowerManagement = applePackage "PowerManagement"   "osx-10.11.6"     "1llimhvp0gjffd47322lnjq7cqwinx0c5z7ikli04ad5srpa68mh" {};
+
+    # `configdHeaders` can’t use an override because `pkgs.darwin.configd` on aarch64-darwin will
+    # be replaced by SystemConfiguration.framework from the macOS SDK.
+    configdHeaders  = applePackage "configd"           "osx-10.8.5"      "1gxakahk8gallf16xmhxhprdxkh3prrmzxnmxfvj0slr0939mmr2" {
+      headersOnly = true;
+      Security    = null;
+    };
+    libutilHeaders  = pkgs.darwin.libutil.override { headersOnly = true; };
+    hfsHeaders      = pkgs.darwin.hfs.override { headersOnly = true; };
+    libresolvHeaders= pkgs.darwin.libresolv.override { headersOnly = true; };
+
+    # TODO(matthewbauer):
+    # To be removed, once I figure out how to build a newer Security version.
+    Security        = applePackage "Security/boot.nix" "osx-10.9.5"      "1nv0dczf67dhk17hscx52izgdcyacgyy12ag0jh6nl5hmfzsn8yy" {};
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/developer-tools-11.3.1.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/developer-tools-11.3.1.nix
@ -0,0 +1,8 @@
+# Generated using:  ./generate-sdk-packages.sh developer-tools 11.3.1
+
+{ applePackage' }:
+
+{
+bootstrap_cmds = applePackage' "bootstrap_cmds" "116" "developer-tools-11.3.1" "148xpqkf5xzpslqxch5l8h6vsz7sys8sdzk4ghbg9mkcivp8qa03" {};
+developer_cmds = applePackage' "developer_cmds" "66" "developer-tools-11.3.1" "0q08m4cxxwph7gxqravmx13l418p1i050bd46zwksn9j9zpw9mlr" {};
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/developer_cmds/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/developer_cmds/default.nix
@ -0,0 +1,37 @@
+{ lib, appleDerivation, xcbuildHook, llvmPackages, makeWrapper }:
+
+appleDerivation {
+  nativeBuildInputs = [ xcbuildHook makeWrapper ];
+
+  patches = [
+    # The following copied from
+    # https://github.com/Homebrew/homebrew-core/commit/712ed3e948868e17f96b7e59972b5f45d4faf688
+    # is needed to build libvirt.
+    ./rpcgen-support-hyper-and-quad-types.patch
+  ];
+
+  postPatch = ''
+    makeWrapper ${llvmPackages.clang}/bin/clang $out/bin/clang-cpp --add-flags "--driver-mode=cpp"
+    substituteInPlace rpcgen/rpc_main.c \
+      --replace "/usr/bin/cpp" "$out/bin/clang-cpp"
+  '';
+
+  # temporary install phase until xcodebuild has "install" support
+  installPhase = ''
+    for f in Products/Release/*; do
+      if [ -f $f ]; then
+        install -D $f $out/bin/$(basename $f)
+      fi
+    done
+
+    for n in 1; do
+      mkdir -p $out/share/man/man$n
+      install */*.$n $out/share/man/man$n
+    done
+  '';
+
+  meta = {
+    platforms = lib.platforms.darwin;
+    maintainers = with lib.maintainers; [ matthewbauer ];
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/developer_cmds/rpcgen-support-hyper-and-quad-types.patch
+++ b/pkgs/os-specific/darwin/apple-source-releases/developer_cmds/rpcgen-support-hyper-and-quad-types.patch
@ -0,0 +1,66 @@
+diff --git a/rpcgen/rpc_parse.c b/rpcgen/rpc_parse.c
+index 52edc9f..db0c1f1 100644
+--- a/rpcgen/rpc_parse.c
+++ b/rpcgen/rpc_parse.c
+@@ -580,6 +580,10 @@ get_type(prefixp, typep, dkind)
+		*typep = "long";
+		(void) peekscan(TOK_INT, &tok);
+		break;
+	case TOK_HYPER:
+		*typep = "int64_t";
+		(void) peekscan(TOK_INT, &tok);
+		break;
+	case TOK_VOID:
+		if (dkind != DEF_UNION && dkind != DEF_PROGRAM) {
+			error("voids allowed only inside union and program definitions with one argument");
+@@ -592,6 +596,7 @@ get_type(prefixp, typep, dkind)
+	case TOK_INT:
+	case TOK_FLOAT:
+	case TOK_DOUBLE:
+	case TOK_QUAD:
+	case TOK_BOOL:
+		*typep = tok.str;
+		break;
+@@ -622,6 +627,11 @@ unsigned_dec(typep)
+		*typep = "u_long";
+		(void) peekscan(TOK_INT, &tok);
+		break;
+	case TOK_HYPER:
+		get_token(&tok);
+		*typep = "u_int64_t";
+		(void) peekscan(TOK_INT, &tok);
+		break;
+	case TOK_INT:
+		get_token(&tok);
+		*typep = "u_int";
+diff --git a/rpcgen/rpc_scan.c b/rpcgen/rpc_scan.c
+index a8df441..4130107 100644
+--- a/rpcgen/rpc_scan.c
+++ b/rpcgen/rpc_scan.c
+@@ -419,8 +419,10 @@ static token symbols[] = {
+	{TOK_UNSIGNED, "unsigned"},
+	{TOK_SHORT, "short"},
+	{TOK_LONG, "long"},
+	{TOK_HYPER, "hyper"},
+	{TOK_FLOAT, "float"},
+	{TOK_DOUBLE, "double"},
+	{TOK_QUAD, "quadruple"},
+	{TOK_STRING, "string"},
+	{TOK_PROGRAM, "program"},
+	{TOK_VERSION, "version"},
+diff --git a/rpcgen/rpc_scan.h b/rpcgen/rpc_scan.h
+index bac2be4..e4c57c8 100644
+--- a/rpcgen/rpc_scan.h
+++ b/rpcgen/rpc_scan.h
+@@ -66,9 +66,11 @@ enum tok_kind {
+	TOK_INT,
+	TOK_SHORT,
+	TOK_LONG,
+	TOK_HYPER,
+	TOK_UNSIGNED,
+	TOK_FLOAT,
+	TOK_DOUBLE,
+	TOK_QUAD,
+	TOK_OPAQUE,
+	TOK_CHAR,
+	TOK_STRING,
--- a/pkgs/os-specific/darwin/apple-source-releases/diskdev_cmds/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/diskdev_cmds/default.nix
@ -0,0 +1,41 @@
+{ lib, appleDerivation, xcbuildHook, Libc, stdenv, macosPackages_11_0_1, xnu
+, fetchurl, libutil }:
+
+let
+  xnu-src = if stdenv.isAarch64 then macosPackages_11_0_1.xnu.src else xnu.src;
+  arch = if stdenv.isAarch64 then "arm" else "i386";
+in appleDerivation {
+  nativeBuildInputs = [ xcbuildHook ];
+  buildInputs = [ libutil ];
+
+  NIX_CFLAGS_COMPILE = "-I.";
+  NIX_LDFLAGS = "-lutil";
+  patchPhase = ''
+    # ugly hacks for missing headers
+    # most are bsd related - probably should make this a drv
+    unpackFile ${Libc.src}
+    unpackFile ${xnu-src}
+    mkdir System sys machine ${arch}
+    cp xnu-*/bsd/sys/disklabel.h sys
+    cp xnu-*/bsd/machine/disklabel.h machine
+    cp xnu-*/bsd/${arch}/disklabel.h ${arch}
+    cp -r xnu-*/bsd/sys System
+    cp -r Libc-*/uuid System
+    substituteInPlace diskdev_cmds.xcodeproj/project.pbxproj \
+      --replace 'DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";' ""
+  '';
+  installPhase = ''
+    install -D Products/Release/libdisk.a $out/lib/libdisk.a
+    rm Products/Release/libdisk.a
+    for f in Products/Release/*; do
+      if [ -f $f ]; then
+        install -D $f $out/bin/$(basename $f)
+      fi
+    done
+  '';
+
+  meta = {
+    platforms = lib.platforms.darwin;
+    maintainers = with lib.maintainers; [ matthewbauer ];
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/dtrace/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/dtrace/default.nix
@ -0,0 +1,55 @@
+{ appleDerivation, xcbuildHook, CoreSymbolication
+, xnu, bison, flex, darling, stdenv, fixDarwinDylibNames }:
+
+appleDerivation {
+  nativeBuildInputs = [ xcbuildHook flex bison fixDarwinDylibNames ];
+  buildInputs = [ CoreSymbolication darling xnu ];
+  # -fcommon: workaround build failure on -fno-common toolchains:
+  #   duplicate symbol '_kCSRegionMachHeaderName' in: libproc.o dt_module_apple.o
+  NIX_CFLAGS_COMPILE = "-DCTF_OLD_VERSIONS -DPRIVATE -DYYDEBUG=1 -I${xnu}/Library/Frameworks/System.framework/Headers -Wno-error=implicit-function-declaration -fcommon";
+  NIX_LDFLAGS = "-L./Products/Release";
+  xcbuildFlags = [ "-target" "dtrace_frameworks" "-target" "dtrace" ];
+
+  doCheck = false;
+  checkPhase = "xcodebuild -target dtrace_tests";
+
+  postPatch = ''
+    substituteInPlace dtrace.xcodeproj/project.pbxproj \
+      --replace "/usr/sbin" ""
+    substituteInPlace libdtrace/dt_open.c \
+      --replace /usr/bin/clang ${stdenv.cc.cc}/bin/clang \
+      --replace /usr/bin/ld ${stdenv.cc.bintools.bintools}/bin/ld \
+      --replace /usr/lib/dtrace/dt_cpp.h $out/include/dt_cpp.h \
+      --replace /usr/lib/dtrace $out/lib/dtrace
+  '';
+
+  # hack to handle xcbuild's broken lex handling
+  preBuild = ''
+    pushd libdtrace
+    yacc -d dt_grammar.y
+    flex -l -d dt_lex.l
+    popd
+
+    substituteInPlace dtrace.xcodeproj/project.pbxproj \
+      --replace '6EBC9800099BFBBF0001019C /* dt_grammar.y */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.yacc; name = dt_grammar.y; path = libdtrace/dt_grammar.y; sourceTree = "<group>"; };' '6EBC9800099BFBBF0001019C /* y.tab.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = y.tab.c; path = libdtrace/y.tab.c; sourceTree = "<group>"; };' \
+      --replace '6EBC9808099BFBBF0001019C /* dt_lex.l */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.lex; name = dt_lex.l; path = libdtrace/dt_lex.l; sourceTree = "<group>"; };' '6EBC9808099BFBBF0001019C /* lex.yy.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = lex.yy.c; path = libdtrace/lex.yy.c; sourceTree = "<group>"; };'
+  '';
+
+  # xcbuild doesn't support install
+  installPhase = ''
+    mkdir -p $out
+
+    cp -r Products/Release/usr/include $out/include
+    cp scripts/dt_cpp.h $out/include/dt_cpp.h
+
+    mkdir $out/lib
+    cp Products/Release/*.dylib $out/lib
+
+    mkdir $out/bin
+    cp Products/Release/dtrace $out/bin
+
+    mkdir -p $out/lib/dtrace
+
+    install_name_tool -change $PWD/Products/Release/libdtrace.dylib $out/lib/libdtrace.dylib $out/bin/dtrace
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/dyld/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/dyld/default.nix
@ -0,0 +1,16 @@
+{ lib, appleDerivation', stdenvNoCC }:
+
+appleDerivation' stdenvNoCC {
+  installPhase = ''
+    mkdir -p $out/lib $out/include
+    ln -s /usr/lib/dyld $out/lib/dyld
+    cp -r include $out/
+  '';
+
+  meta = with lib; {
+    description = "Impure primitive symlinks to the Mac OS native dyld, along with headers";
+    maintainers = with maintainers; [ copumpkin ];
+    platforms   = platforms.darwin;
+    license     = licenses.apsl20;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/eap8021x/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/eap8021x/default.nix
@ -0,0 +1,10 @@
+{ appleDerivation', stdenv }:
+
+appleDerivation' stdenv {
+  dontBuild = true;
+  installPhase = ''
+    mkdir -p $out/Library/Frameworks/EAP8021X.framework/Headers
+
+    cp EAP8021X.fproj/EAPClientProperties.h $out/Library/Frameworks/EAP8021X.framework/Headers
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/file_cmds/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/file_cmds/default.nix
@ -0,0 +1,38 @@
+{ lib, appleDerivation, xcbuildHook, zlib, bzip2, xz, ncurses, libutil, Libinfo }:
+
+appleDerivation {
+  nativeBuildInputs = [ xcbuildHook ];
+  buildInputs = [ zlib bzip2 xz ncurses libutil Libinfo ];
+
+  # some commands not working:
+  # mtree: _simple.h not found
+  # ipcs: sys/ipcs.h not found
+  # so remove their targets from the project
+  patchPhase = ''
+    substituteInPlace file_cmds.xcodeproj/project.pbxproj \
+      --replace "FC8A8CAA14B655FD001B97AD /* PBXTargetDependency */," "" \
+      --replace "FC8A8C9C14B655FD001B97AD /* PBXTargetDependency */," "" \
+      --replace "productName = file_cmds;" "" \
+      --replace '/usr/lib/libcurses.dylib' 'libncurses.dylib'
+    sed -i -re "s/name = ([a-zA-Z]+);/name = \1; productName = \1;/" file_cmds.xcodeproj/project.pbxproj
+  '';
+
+  # temporary install phase until xcodebuild has "install" support
+  installPhase = ''
+    for f in Products/Release/*; do
+      if [ -f $f ]; then
+        install -D $f $out/bin/$(basename $f)
+      fi
+    done
+
+    for n in 1; do
+      mkdir -p $out/share/man/man$n
+      install */*.$n $out/share/man/man$n
+    done
+  '';
+
+  meta = {
+    platforms = lib.platforms.darwin;
+    maintainers = with lib.maintainers; [ matthewbauer ];
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/generate-sdk-packages.sh
+++ b/pkgs/os-specific/darwin/apple-source-releases/generate-sdk-packages.sh
@ -0,0 +1,29 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl
+
+# usage:
+#   generate-sdk-packages.sh macos 11.0.1
+
+cd $(dirname "$0")
+
+sdkName="$1-$2"
+outfile="$sdkName.nix"
+
+>$outfile echo "# Generated using:  ./$(basename "$0") $1 $2
+
+{ applePackage' }:
+
+{"
+
+parse_line() {
+    readarray -t -d$'\t' package <<<$2
+    local pname=${package[0]} version=${package[1]}
+
+    if [ -d $pname ]; then
+        sha256=$(nix-prefetch-url "https://opensource.apple.com/tarballs/$pname/$pname-$version.tar.gz")
+        >>$outfile echo "$pname = applePackage' \"$pname\" \"$version\" \"$sdkName\" \"$sha256\" {};"
+    fi
+}
+readarray -s1 -c1 -C parse_line < <(curl -sS "https://opensource.apple.com/text/${sdkName//./}.txt")
+
+>>$outfile echo '}'
--- a/pkgs/os-specific/darwin/apple-source-releases/hfs/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/hfs/default.nix
@ -0,0 +1,47 @@
+{ appleDerivation', stdenv, stdenvNoCC, lib, headersOnly ? true }:
+
+appleDerivation' (if headersOnly then stdenvNoCC else stdenv) {
+  installPhase = lib.optionalString headersOnly ''
+    mkdir -p $out/include/hfs
+    cp core/*.h $out/include/hfs
+  '';
+
+  appleHeaders = ''
+    hfs/BTreeScanner.h
+    hfs/BTreesInternal.h
+    hfs/BTreesPrivate.h
+    hfs/CatalogPrivate.h
+    hfs/FileMgrInternal.h
+    hfs/HFSUnicodeWrappers.h
+    hfs/UCStringCompareData.h
+    hfs/hfs.h
+    hfs/hfs_alloc_trace.h
+    hfs/hfs_attrlist.h
+    hfs/hfs_btreeio.h
+    hfs/hfs_catalog.h
+    hfs/hfs_cnode.h
+    hfs/hfs_cprotect.h
+    hfs/hfs_dbg.h
+    hfs/hfs_endian.h
+    hfs/hfs_extents.h
+    hfs/hfs_format.h
+    hfs/hfs_fsctl.h
+    hfs/hfs_hotfiles.h
+    hfs/hfs_iokit.h
+    hfs/hfs_journal.h
+    hfs/hfs_kdebug.h
+    hfs/hfs_key_roll.h
+    hfs/hfs_macos_defs.h
+    hfs/hfs_mount.h
+    hfs/hfs_quota.h
+    hfs/hfs_unistr.h
+    hfs/kext-config.h
+    hfs/rangelist.h
+  '';
+
+  meta = {
+    # Seems nobody wants its binary, so we didn't implement building.
+    broken = !headersOnly;
+    platforms = lib.platforms.darwin;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/launchd/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/launchd/default.nix
@ -0,0 +1,26 @@
+{ appleDerivation', stdenvNoCC }:
+
+appleDerivation' stdenvNoCC {
+  # No clue why the same file has two different names. Ask Apple!
+  installPhase = ''
+    mkdir -p $out/include/ $out/include/servers
+    cp liblaunch/*.h $out/include
+
+    cp liblaunch/bootstrap.h $out/include/servers
+    cp liblaunch/bootstrap.h $out/include/servers/bootstrap_defs.h
+  '';
+
+  appleHeaders = ''
+    bootstrap.h
+    bootstrap_priv.h
+    launch.h
+    launch_internal.h
+    launch_priv.h
+    reboot2.h
+    servers/bootstrap.h
+    servers/bootstrap_defs.h
+    vproc.h
+    vproc_internal.h
+    vproc_priv.h
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/libauto/auto_dtrace.h
+++ b/pkgs/os-specific/darwin/apple-source-releases/libauto/auto_dtrace.h
@ -0,0 +1,129 @@
+/*
+ * Generated by dtrace(1M).
+ */
+
+#ifndef _AUTO_DTRACE_H
+#define _AUTO_DTRACE_H
+
+#include <unistd.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#define GARBAGE_COLLECTION_STABILITY "___dtrace_stability$garbage_collection$v1$1_1_0_1_1_0_1_1_0_1_1_0_1_1_0"
+
+#define GARBAGE_COLLECTION_TYPEDEFS "___dtrace_typedefs$garbage_collection$v2$6175746f5f636f6c6c656374696f6e5f70686173655f74$6175746f5f636f6c6c656374696f6e5f747970655f74$6d616c6c6f635f7a6f6e655f74"
+
+#if !defined(DTRACE_PROBES_DISABLED) || !DTRACE_PROBES_DISABLED
+
+#define GARBAGE_COLLECTION_AUTO_BLOCK_LOST_THREAD_LOCALITY(arg0, arg1) \
+do { \
+  __asm__ volatile(".reference " GARBAGE_COLLECTION_TYPEDEFS); \
+  __dtrace_probe$garbage_collection$auto_block_lost_thread_locality$v1$766f6964202a$75696e7436345f74(arg0, arg1); \
+  __asm__ volatile(".reference " GARBAGE_COLLECTION_STABILITY); \
+} while (0)
+#define GARBAGE_COLLECTION_AUTO_BLOCK_LOST_THREAD_LOCALITY_ENABLED() \
+  ({ int _r = __dtrace_isenabled$garbage_collection$auto_block_lost_thread_locality$v1(); \
+    __asm__ volatile(""); \
+    _r; })
+#define GARBAGE_COLLECTION_AUTO_REFCOUNT_ONE_ALLOCATION(arg0) \
+do { \
+  __asm__ volatile(".reference " GARBAGE_COLLECTION_TYPEDEFS); \
+  __dtrace_probe$garbage_collection$auto_refcount_one_allocation$v1$75696e7436345f74(arg0); \
+  __asm__ volatile(".reference " GARBAGE_COLLECTION_STABILITY); \
+} while (0)
+#define GARBAGE_COLLECTION_AUTO_REFCOUNT_ONE_ALLOCATION_ENABLED() \
+  ({ int _r = __dtrace_isenabled$garbage_collection$auto_refcount_one_allocation$v1(); \
+    __asm__ volatile(""); \
+    _r; })
+#define GARBAGE_COLLECTION_COLLECTION_BEGIN(arg0, arg1) \
+do { \
+  __asm__ volatile(".reference " GARBAGE_COLLECTION_TYPEDEFS); \
+  __dtrace_probe$garbage_collection$collection_begin$v1$6d616c6c6f635f7a6f6e655f74202a$6175746f5f636f6c6c656374696f6e5f747970655f74(arg0, arg1); \
+  __asm__ volatile(".reference " GARBAGE_COLLECTION_STABILITY); \
+} while (0)
+#define GARBAGE_COLLECTION_COLLECTION_BEGIN_ENABLED() \
+  ({ int _r = __dtrace_isenabled$garbage_collection$collection_begin$v1(); \
+    __asm__ volatile(""); \
+    _r; })
+#define GARBAGE_COLLECTION_COLLECTION_END(arg0, arg1, arg2, arg3, arg4) \
+do { \
+  __asm__ volatile(".reference " GARBAGE_COLLECTION_TYPEDEFS); \
+  __dtrace_probe$garbage_collection$collection_end$v1$6d616c6c6f635f7a6f6e655f74202a$75696e7436345f74$75696e7436345f74$75696e7436345f74$75696e7436345f74(arg0, arg1, arg2, arg3, arg4); \
+  __asm__ volatile(".reference " GARBAGE_COLLECTION_STABILITY); \
+} while (0)
+#define GARBAGE_COLLECTION_COLLECTION_END_ENABLED() \
+  ({ int _r = __dtrace_isenabled$garbage_collection$collection_end$v1(); \
+    __asm__ volatile(""); \
+    _r; })
+#define GARBAGE_COLLECTION_COLLECTION_PHASE_BEGIN(arg0, arg1) \
+do { \
+  __asm__ volatile(".reference " GARBAGE_COLLECTION_TYPEDEFS); \
+  __dtrace_probe$garbage_collection$collection_phase_begin$v1$6d616c6c6f635f7a6f6e655f74202a$6175746f5f636f6c6c656374696f6e5f70686173655f74(arg0, arg1); \
+  __asm__ volatile(".reference " GARBAGE_COLLECTION_STABILITY); \
+} while (0)
+#define GARBAGE_COLLECTION_COLLECTION_PHASE_BEGIN_ENABLED() \
+  ({ int _r = __dtrace_isenabled$garbage_collection$collection_phase_begin$v1(); \
+    __asm__ volatile(""); \
+    _r; })
+#define GARBAGE_COLLECTION_COLLECTION_PHASE_END(arg0, arg1, arg2, arg3) \
+do { \
+  __asm__ volatile(".reference " GARBAGE_COLLECTION_TYPEDEFS); \
+  __dtrace_probe$garbage_collection$collection_phase_end$v1$6d616c6c6f635f7a6f6e655f74202a$6175746f5f636f6c6c656374696f6e5f70686173655f74$75696e7436345f74$75696e7436345f74(arg0, arg1, arg2, arg3); \
+  __asm__ volatile(".reference " GARBAGE_COLLECTION_STABILITY); \
+} while (0)
+#define GARBAGE_COLLECTION_COLLECTION_PHASE_END_ENABLED() \
+  ({ int _r = __dtrace_isenabled$garbage_collection$collection_phase_end$v1(); \
+    __asm__ volatile(""); \
+    _r; })
+
+
+extern void __dtrace_probe$garbage_collection$auto_block_lost_thread_locality$v1$766f6964202a$75696e7436345f74(const void *, uint64_t);
+extern int __dtrace_isenabled$garbage_collection$auto_block_lost_thread_locality$v1(void);
+extern void __dtrace_probe$garbage_collection$auto_refcount_one_allocation$v1$75696e7436345f74(uint64_t);
+extern int __dtrace_isenabled$garbage_collection$auto_refcount_one_allocation$v1(void);
+extern void __dtrace_probe$garbage_collection$collection_begin$v1$6d616c6c6f635f7a6f6e655f74202a$6175746f5f636f6c6c656374696f6e5f747970655f74(const malloc_zone_t *, auto_collection_type_t);
+extern int __dtrace_isenabled$garbage_collection$collection_begin$v1(void);
+extern void __dtrace_probe$garbage_collection$collection_end$v1$6d616c6c6f635f7a6f6e655f74202a$75696e7436345f74$75696e7436345f74$75696e7436345f74$75696e7436345f74(const malloc_zone_t *, uint64_t, uint64_t, uint64_t, uint64_t);
+extern int __dtrace_isenabled$garbage_collection$collection_end$v1(void);
+extern void __dtrace_probe$garbage_collection$collection_phase_begin$v1$6d616c6c6f635f7a6f6e655f74202a$6175746f5f636f6c6c656374696f6e5f70686173655f74(const malloc_zone_t *, auto_collection_phase_t);
+extern int __dtrace_isenabled$garbage_collection$collection_phase_begin$v1(void);
+extern void __dtrace_probe$garbage_collection$collection_phase_end$v1$6d616c6c6f635f7a6f6e655f74202a$6175746f5f636f6c6c656374696f6e5f70686173655f74$75696e7436345f74$75696e7436345f74(const malloc_zone_t *, auto_collection_phase_t, uint64_t, uint64_t);
+extern int __dtrace_isenabled$garbage_collection$collection_phase_end$v1(void);
+
+#else
+
+#define GARBAGE_COLLECTION_AUTO_BLOCK_LOST_THREAD_LOCALITY(arg0, arg1) \
+do { \
+  } while (0)
+#define GARBAGE_COLLECTION_AUTO_BLOCK_LOST_THREAD_LOCALITY_ENABLED() (0)
+#define GARBAGE_COLLECTION_AUTO_REFCOUNT_ONE_ALLOCATION(arg0) \
+do { \
+  } while (0)
+#define GARBAGE_COLLECTION_AUTO_REFCOUNT_ONE_ALLOCATION_ENABLED() (0)
+#define GARBAGE_COLLECTION_COLLECTION_BEGIN(arg0, arg1) \
+do { \
+  } while (0)
+#define GARBAGE_COLLECTION_COLLECTION_BEGIN_ENABLED() (0)
+#define GARBAGE_COLLECTION_COLLECTION_END(arg0, arg1, arg2, arg3, arg4) \
+do { \
+  } while (0)
+#define GARBAGE_COLLECTION_COLLECTION_END_ENABLED() (0)
+#define GARBAGE_COLLECTION_COLLECTION_PHASE_BEGIN(arg0, arg1) \
+do { \
+  } while (0)
+#define GARBAGE_COLLECTION_COLLECTION_PHASE_BEGIN_ENABLED() (0)
+#define GARBAGE_COLLECTION_COLLECTION_PHASE_END(arg0, arg1, arg2, arg3) \
+do { \
+  } while (0)
+#define GARBAGE_COLLECTION_COLLECTION_PHASE_END_ENABLED() (0)
+
+#endif /* !defined(DTRACE_PROBES_DISABLED) || !DTRACE_PROBES_DISABLED */
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif  /* _AUTO_DTRACE_H */
--- a/pkgs/os-specific/darwin/apple-source-releases/libauto/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libauto/default.nix
@ -0,0 +1,86 @@
+{ lib, stdenv, appleDerivation, libdispatch, Libsystem }:
+
+appleDerivation {
+  # these are included in the pure libc
+  buildInputs = lib.optionals stdenv.cc.nativeLibc [ libdispatch Libsystem ];
+
+  buildPhase = ''
+    cp ${./auto_dtrace.h} ./auto_dtrace.h
+
+    substituteInPlace ThreadLocalCollector.h --replace SubZone.h Subzone.h
+
+    substituteInPlace auto_zone.cpp \
+      --replace "#include <msgtracer_client.h>" ''$'#include <asl.h>\nstatic void msgtracer_log_with_keys(...) { };'
+
+    substituteInPlace Definitions.h \
+      --replace "#include <System/pthread_machdep.h>" "" \
+      --replace 'void * const, void * const' 'void * const, void *'
+
+    # getspecific_direct is more efficient, but this should be equivalent...
+    substituteInPlace Zone.h \
+      --replace "_pthread_getspecific_direct" "pthread_getspecific" \
+      --replace "_pthread_has_direct_tsd()" "0" \
+      --replace "__PTK_FRAMEWORK_GC_KEY0" "110" \
+      --replace "__PTK_FRAMEWORK_GC_KEY1" "111" \
+      --replace "__PTK_FRAMEWORK_GC_KEY2" "112" \
+      --replace "__PTK_FRAMEWORK_GC_KEY3" "113" \
+      --replace "__PTK_FRAMEWORK_GC_KEY4" "114" \
+      --replace "__PTK_FRAMEWORK_GC_KEY5" "115" \
+      --replace "__PTK_FRAMEWORK_GC_KEY6" "116" \
+      --replace "__PTK_FRAMEWORK_GC_KEY7" "117" \
+      --replace "__PTK_FRAMEWORK_GC_KEY8" "118" \
+      --replace "__PTK_FRAMEWORK_GC_KEY9" "119"
+
+    substituteInPlace auto_zone.cpp \
+      --replace "__PTK_FRAMEWORK_GC_KEY9" "119" \
+      --replace "__PTK_FRAMEWORK_GC_KEY0" "110" \
+
+    substituteInPlace Zone.cpp \
+      --replace "_pthread_getspecific_direct" "pthread_getspecific" \
+      --replace "__PTK_FRAMEWORK_GC_KEY9" "119" \
+      --replace "__PTK_FRAMEWORK_GC_KEY0" "110" \
+      --replace "__PTK_LIBDISPATCH_KEY0"  "20" \
+      --replace "struct auto_zone_cursor {" ''$'extern "C" int pthread_key_init_np(int, void (*)(void *));\nstruct auto_zone_cursor {'
+
+    substituteInPlace auto_impl_utilities.c \
+      --replace "#   include <CrashReporterClient.h>" "void CRSetCrashLogMessage(void *msg) { };"
+
+    c++ -I. -O3 -c -Wno-c++11-extensions auto_zone.cpp
+    cc  -I. -O3 -Iauto_tester -c auto_impl_utilities.c
+    c++ -I. -O3 -c auto_weak.cpp
+    c++ -I. -O3 -c Admin.cpp
+    c++ -I. -O3 -c Bitmap.cpp
+    c++ -I. -O3 -c Definitions.cpp
+    c++ -I. -O3 -c Environment.cpp
+    c++ -I. -O3 -c Large.cpp
+    c++ -I. -O3 -c Region.cpp
+    c++ -I. -O3 -c Subzone.cpp
+    c++ -I. -O3 -c WriteBarrier.cpp
+    c++ -I. -O3 -c Zone.cpp
+    c++ -I. -O3 -c Thread.cpp
+    c++ -I. -O3 -c InUseEnumerator.cpp
+    c++ -I. -O3 -c auto_gdb_interface.cpp
+    c++ -I. -O3 -c PointerHash.cpp
+    c++ -I. -O3 -c ThreadLocalCollector.cpp
+    c++ -I. -O3 -c ZoneDump.cpp
+    c++ -I. -O3 -c ZoneCollectors.cpp
+    c++ -I. -O3 -c SubzonePartition.cpp
+    c++ -I. -O3 -c ZoneCollectionChecking.cpp
+    c++ -I. -O3 -c ZoneCompaction.cpp
+    c++ -I. -O3 -c BlockRef.cpp
+
+    c++ -Wl,-no_dtrace_dof --stdlib=libc++ -dynamiclib -install_name $out/lib/libauto.dylib -o libauto.dylib *.o
+  '';
+
+  installPhase = ''
+    mkdir -p $out/lib $out/include
+    cp auto_zone.h auto_weak.h auto_tester/auto_tester.h auto_gdb_interface.h $out/include
+    cp libauto.dylib $out/lib
+  '';
+
+  meta = {
+    # libauto is only used by objc4/pure.nix , but objc4 is now using the impure approach, so we don't bother to fix this.
+    broken = true;
+    platforms = lib.platforms.darwin;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/libclosure/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libclosure/default.nix
@ -0,0 +1,13 @@
+{ appleDerivation', stdenvNoCC }:
+
+appleDerivation' stdenvNoCC {
+  installPhase = ''
+    mkdir -p $out/include
+    cp *.h $out/include/
+  '';
+
+  appleHeaders = ''
+    Block.h
+    Block_private.h
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/libdispatch/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libdispatch/default.nix
@ -0,0 +1,54 @@
+{ appleDerivation', stdenvNoCC }:
+
+appleDerivation' stdenvNoCC {
+  dontConfigure = true;
+  dontBuild = true;
+  installPhase = ''
+    mkdir -p $out/include/dispatch $out/include/os
+
+    # Move these headers so CF can find <os/voucher_private.h>
+    mv private/voucher*.h  $out/include/os
+    cp -r private/*.h  $out/include/dispatch
+
+    cp -r dispatch/*.h $out/include/dispatch
+    cp -r os/object*.h  $out/include/os
+
+    # gcc compatability. Source: https://stackoverflow.com/a/28014302/3714556
+    substituteInPlace $out/include/dispatch/object.h \
+      --replace 'typedef void (^dispatch_block_t)(void);' \
+                '#ifdef __clang__
+                 typedef void (^dispatch_block_t)(void);
+                 #else
+                 typedef void* dispatch_block_t;
+                 #endif'
+  '';
+
+  appleHeaders = ''
+    dispatch/base.h
+    dispatch/benchmark.h
+    dispatch/block.h
+    dispatch/data.h
+    dispatch/data_private.h
+    dispatch/dispatch.h
+    dispatch/group.h
+    dispatch/introspection.h
+    dispatch/introspection_private.h
+    dispatch/io.h
+    dispatch/io_private.h
+    dispatch/layout_private.h
+    dispatch/mach_private.h
+    dispatch/object.h
+    dispatch/once.h
+    dispatch/private.h
+    dispatch/queue.h
+    dispatch/queue_private.h
+    dispatch/semaphore.h
+    dispatch/source.h
+    dispatch/source_private.h
+    dispatch/time.h
+    os/object.h
+    os/object_private.h
+    os/voucher_activity_private.h
+    os/voucher_private.h
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/libiconv/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libiconv/default.nix
@ -0,0 +1,37 @@
+{ stdenv, appleDerivation, lib
+, enableStatic ? stdenv.hostPlatform.isStatic
+, enableShared ? !stdenv.hostPlatform.isStatic
+}:
+
+appleDerivation {
+  postUnpack = "sourceRoot=$sourceRoot/libiconv";
+
+  preConfigure = lib.optionalString stdenv.hostPlatform.isiOS ''
+    sed -i 's/darwin\*/ios\*/g' configure libcharset/configure
+  '';
+
+  configureFlags = [
+    (lib.enableFeature enableStatic "static")
+    (lib.enableFeature enableShared "shared")
+  ];
+
+  postInstall = lib.optionalString enableShared ''
+    mv $out/lib/libiconv.dylib $out/lib/libiconv-nocharset.dylib
+    ${stdenv.cc.bintools.targetPrefix}install_name_tool -id $out/lib/libiconv-nocharset.dylib $out/lib/libiconv-nocharset.dylib
+
+    # re-export one useless symbol; ld will reject a dylib that only reexports other dylibs
+    echo 'void dont_use_this(){}' | ${stdenv.cc.bintools.targetPrefix}clang -dynamiclib -x c - -current_version 2.4.0 \
+      -compatibility_version 7.0.0 -current_version 7.0.0 -o $out/lib/libiconv.dylib \
+      -Wl,-reexport_library -Wl,$out/lib/libiconv-nocharset.dylib \
+      -Wl,-reexport_library -Wl,$out/lib/libcharset.dylib
+  '';
+
+  setupHooks = [
+    ../../../../build-support/setup-hooks/role.bash
+    ../../../../development/libraries/libiconv/setup-hook.sh
+  ];
+
+  meta = {
+    platforms = lib.platforms.darwin;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/libplatform/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libplatform/default.nix
@ -0,0 +1,32 @@
+{ appleDerivation', stdenvNoCC }:
+
+appleDerivation' stdenvNoCC {
+  installPhase = ''
+    mkdir $out
+    cp -r include $out/include
+  '';
+
+  appleHeaders = ''
+    _simple.h
+    libkern/OSAtomic.h
+    libkern/OSAtomicDeprecated.h
+    libkern/OSAtomicQueue.h
+    libkern/OSCacheControl.h
+    libkern/OSSpinLockDeprecated.h
+    os/alloc_once_impl.h
+    os/base.h
+    os/base_private.h
+    os/internal/atomic.h
+    os/internal/crashlog.h
+    os/internal/internal_shared.h
+    os/lock.h
+    os/lock_private.h
+    os/once_private.h
+    os/semaphore_private.h
+    platform/compat.h
+    platform/introspection_private.h
+    platform/string.h
+    setjmp.h
+    ucontext.h
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/libpthread/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libpthread/default.nix
@ -0,0 +1,55 @@
+{ lib, appleDerivation', stdenvNoCC, libdispatch, xnu }:
+
+appleDerivation' stdenvNoCC {
+  propagatedBuildInputs = [ libdispatch xnu ];
+
+  installPhase = ''
+    mkdir -p $out/include/pthread/
+    mkdir -p $out/include/sys/_types
+    cp pthread/*.h $out/include/pthread/
+
+    # This overwrites qos.h, and is probably not necessary, but I'll leave it here for now
+    # cp private/*.h $out/include/pthread/
+
+    cp -r sys $out/include
+    cp -r sys/_pthread/*.h $out/include/sys/_types/
+  '';
+
+  appleHeaders = ''
+    pthread/introspection.h
+    pthread/pthread.h
+    pthread/pthread_impl.h
+    pthread/pthread_spis.h
+    pthread/qos.h
+    pthread/sched.h
+    pthread/spawn.h
+    sys/_pthread/_pthread_attr_t.h
+    sys/_pthread/_pthread_cond_t.h
+    sys/_pthread/_pthread_condattr_t.h
+    sys/_pthread/_pthread_key_t.h
+    sys/_pthread/_pthread_mutex_t.h
+    sys/_pthread/_pthread_mutexattr_t.h
+    sys/_pthread/_pthread_once_t.h
+    sys/_pthread/_pthread_rwlock_t.h
+    sys/_pthread/_pthread_rwlockattr_t.h
+    sys/_pthread/_pthread_t.h
+    sys/_pthread/_pthread_types.h
+    sys/_types/_pthread_attr_t.h
+    sys/_types/_pthread_cond_t.h
+    sys/_types/_pthread_condattr_t.h
+    sys/_types/_pthread_key_t.h
+    sys/_types/_pthread_mutex_t.h
+    sys/_types/_pthread_mutexattr_t.h
+    sys/_types/_pthread_once_t.h
+    sys/_types/_pthread_rwlock_t.h
+    sys/_types/_pthread_rwlockattr_t.h
+    sys/_types/_pthread_t.h
+    sys/_types/_pthread_types.h
+    sys/qos.h
+    sys/qos_private.h
+  '';
+
+  meta = {
+    platforms = lib.platforms.darwin;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/libresolv/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libresolv/default.nix
@ -0,0 +1,52 @@
+{ lib, appleDerivation', stdenv, stdenvNoCC, Libinfo, configdHeaders, mDNSResponder
+, headersOnly ? false
+}:
+
+appleDerivation' (if headersOnly then stdenvNoCC else stdenv) {
+  buildInputs = lib.optionals (!headersOnly) [ Libinfo configdHeaders mDNSResponder ];
+
+  buildPhase = lib.optionalString (!headersOnly) ''
+    $CC -I. -c dns_util.c
+    $CC -I. -c dns.c
+    $CC -I. -c dns_async.c
+    $CC -I. -c base64.c
+    $CC -I. -c dst_api.c
+    $CC -I. -c dst_hmac_link.c
+    $CC -I. -c dst_support.c
+    $CC -I. -c ns_date.c
+    $CC -I. -c ns_name.c
+    $CC -I. -c ns_netint.c
+    $CC -I. -c ns_parse.c
+    $CC -I. -c ns_print.c
+    $CC -I. -c ns_samedomain.c
+    $CC -I. -c ns_sign.c
+    $CC -I. -c ns_ttl.c
+    $CC -I. -c ns_verify.c
+    $CC -I. -c res_comp.c
+    $CC -I. -c res_data.c
+    $CC -I. -c res_debug.c
+    $CC -I. -c res_findzonecut.c
+    $CC -I. -c res_init.c
+    $CC -I. -c res_mkquery.c
+    $CC -I. -c res_mkupdate.c
+    $CC -I. -c res_query.c
+    $CC -I. -c res_send.c
+    $CC -I. -c res_sendsigned.c
+    $CC -I. -c res_update.c
+    $CC -dynamiclib -install_name $out/lib/libresolv.9.dylib -current_version 1.0.0 -compatibility_version 1.0.0 -o libresolv.9.dylib *.o
+  '';
+
+  installPhase = ''
+    mkdir -p $out/include $out/include/arpa $out/lib
+
+    cp dns.h           $out/include/
+    cp dns_util.h      $out/include
+    cp nameser.h       $out/include
+    ln -s ../nameser.h $out/include/arpa
+    cp resolv.h        $out/include
+  '' + lib.optionalString (!headersOnly) ''
+
+    cp libresolv.9.dylib $out/lib
+    ln -s libresolv.9.dylib $out/lib/libresolv.dylib
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/libunwind/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libunwind/default.nix
@ -0,0 +1,17 @@
+{ lib, appleDerivation }:
+
+appleDerivation {
+  dontBuild = true;
+
+  # install headers only
+  installPhase = ''
+    mkdir -p $out/lib
+    cp -R include $out/include
+  '';
+
+  meta = with lib; {
+    maintainers = with maintainers; [ copumpkin lnl7 ];
+    platforms   = platforms.darwin;
+    license     = licenses.apsl20;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/libutil/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libutil/default.nix
@ -0,0 +1,43 @@
+{ lib, stdenv, stdenvNoCC, appleDerivation', xcbuildHook
+
+# headersOnly is true when building for libSystem
+, headersOnly ? false }:
+
+appleDerivation' (if headersOnly then stdenvNoCC else stdenv) {
+  nativeBuildInputs = lib.optional (!headersOnly) xcbuildHook;
+
+  prePatch = ''
+    substituteInPlace tzlink.c \
+      --replace '#include <xpc/xpc.h>' ""
+  '';
+
+  xcbuildFlags = [ "-target" "util" ];
+
+  installPhase = ''
+    mkdir -p $out/include
+  '' + lib.optionalString headersOnly ''
+    cp *.h $out/include
+  '' + lib.optionalString (!headersOnly)''
+    mkdir -p $out/lib $out/include
+
+    cp Products/Release/*.dylib $out/lib
+    cp Products/Release/*.h $out/include
+
+    # TODO: figure out how to get this to be right the first time around
+    install_name_tool -id $out/lib/libutil.dylib $out/lib/libutil.dylib
+  '';
+
+  # FIXME: headers are different against headersOnly. And all the headers are NOT in macos, do we really want them?
+  # appleHeaders = ''
+  #   libutil.h
+  #   mntopts.h
+  #   tzlink.h
+  #   wipefs.h
+  # '';
+
+  meta = with lib; {
+    maintainers = with maintainers; [ copumpkin ];
+    platforms   = platforms.darwin;
+    license     = licenses.apsl20;
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/mDNSResponder/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/mDNSResponder/default.nix
@ -0,0 +1,10 @@
+{ appleDerivation', stdenvNoCC }:
+
+appleDerivation' stdenvNoCC {
+  phases = [ "unpackPhase" "installPhase" ];
+
+  installPhase = ''
+    mkdir -p $out/include
+    cp mDNSShared/dns_sd.h $out/include
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/macos-11.0.1.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/macos-11.0.1.nix
@ -0,0 +1,46 @@
+# Generated using:  ./generate-sdk-packages.sh macos 11.0.1
+
+{ applePackage' }:
+
+{
+adv_cmds = applePackage' "adv_cmds" "176" "macos-11.0.1" "0x8c25rh6fnzndbc26vcb65vcxilvqyfvm2klfyci1wr4bh3ixgk" {};
+architecture = applePackage' "architecture" "279" "macos-11.0.1" "1cgp33ywa30max6cyp69kvii299hx2vgwvmy3ms8n4gaq2mkpaky" {};
+basic_cmds = applePackage' "basic_cmds" "55" "macos-11.0.1" "0hvab4b1v5q2x134hdkal0rmz5gsdqyki1vb0dbw4py1bqf0yaw9" {};
+bootstrap_cmds = applePackage' "bootstrap_cmds" "121" "macos-11.0.1" "09bwclws6adxb1ky9q35f4ikddk4mbalmgds0cmqaf7j23qxl3fv" {};
+CommonCrypto = applePackage' "CommonCrypto" "60178.40.2" "macos-11.0.1" "0r3b1mlfmbdzpwn6pbsbfaga3k63gpwcwbhkbi4r09aq82skl02v" {};
+configd = applePackage' "configd" "1109.40.9" "macos-11.0.1" "173i55wfzli9pg2x2rw437hs68h6l4ngss5jfgf18g26zjkjzv5v" {};
+copyfile = applePackage' "copyfile" "173.40.2" "macos-11.0.1" "0qyp15qj3fdb7yx033n57l7s61d70mv17f43yiwcbhx09mmlrp07" {};
+Csu = applePackage' "Csu" "88" "macos-11.0.1" "029lgcyj0i16036h2lcx6fd6r1yf1bkj5dnvz905rh6ncl8skgdr" {};
+diskdev_cmds = applePackage' "diskdev_cmds" "667.40.1" "macos-11.0.1" "1bqwkwkwd556rba5000ap77xrhaf4xnmy83mszd7a0yvl2xlma7j" {};
+dtrace = applePackage' "dtrace" "370.40.1" "macos-11.0.1" "1941yczmn94ng5zlnhf0i5mjw2f4g7znisgvhkhn5f86gxmd98wl" {};
+dyld = applePackage' "dyld" "832.7.1" "macos-11.0.1" "1s77ca6jg20z91qlph59da8j61m97y23vrw48xs4rywdzh4915n0" {};
+eap8021x = applePackage' "eap8021x" "304.40.1" "macos-11.0.1" "1ph3kcpf527s0jqsi60j2sgg3m8h128spf292d8kyc08siz9mf9c" {};
+file_cmds = applePackage' "file_cmds" "321.40.3" "macos-11.0.1" "04789vn1wghclfr3ma3ncg716xdsxfj66hrcxi5h3h1ryag2ycfz" {};
+hfs = applePackage' "hfs" "556.41.1" "macos-11.0.1" "1rhkmn2yj5p4wmi4aajy5hj2h0gxk63s8j4qz4ziy4g4bjpdgwmy" {};
+ICU = applePackage' "ICU" "66108" "macos-11.0.1" "1d76cyyqpwkzjlxfajm4nsglxmfrcafbnjwnjxc3j5w3nw67pqhx" {};
+Libc = applePackage' "Libc" "1439.40.11" "macos-11.0.1" "0d5xlnks4lc9391wg31c9126vflb40lc5ffkgxmf2kpyglac1280" {};
+libclosure = applePackage' "libclosure" "78" "macos-11.0.1" "089i2bl4agpnfplrg23xbzma1674g0w05988nxdps6ghxl4kz66f" {};
+libdispatch = applePackage' "libdispatch" "1271.40.12" "macos-11.0.1" "0z7r42zfb8y48f0nrw0qw7fanfvimycimgnrg3jig101kjvjar98" {};
+libiconv = applePackage' "libiconv" "59" "macos-11.0.1" "0hqbsqggjrr0sv6h70lcr3gabgk9inyc8aq1b30wibgjm6crjwpp" {};
+Libinfo = applePackage' "Libinfo" "542.40.3" "macos-11.0.1" "0y5x6wxd3mwn6my1jdp8qrak3y7x7sgjdmwyw9cvvbn3kg9v6z1p" {};
+Libnotify = applePackage' "Libnotify" "279.40.4" "macos-11.0.1" "0aswflxki877izp6sacv35sydn6a3639cflv3zhs3i7vkfbsvbf5" {};
+libplatform = applePackage' "libplatform" "254.40.4" "macos-11.0.1" "1mhi8n66864y98dr3n0pkqad3aqim800kn9bxzp6h5jf2jni3aql" {};
+libpthread = applePackage' "libpthread" "454.40.3" "macos-11.0.1" "18rb4dqjdf3krzi4hdj5i310gy49ipf01klbkp9g51i02a55gphq" {};
+libresolv = applePackage' "libresolv" "68" "macos-11.0.1" "1ysvg6d28xyaky9sn7giglnsflhjsbj17h3h3i6knlzxnzznpkql" {};
+Librpcsvc = applePackage' "Librpcsvc" "26" "macos-11.0.1" "1zwfwcl9irxl1dlnf2b4v30vdybp0p0r6n6g1pd14zbdci1jcg2k" {};
+Libsystem = applePackage' "Libsystem" "1292.50.1" "macos-11.0.1" "0w16zaigq18jfsnw15pfyz2mkfqdkn0cc16q617kmgw2khld8j7j" {};
+libunwind = applePackage' "libunwind" "200.10" "macos-11.0.1" "1pmymcqpfk7lfxh6zqch429vfpvmd2m1dlg898170pkx5zhxisl2" {};
+libutil = applePackage' "libutil" "58.40.2" "macos-11.0.1" "1hhgashfj9g4vjv02070c5pn818a5n0bh5l81l2pflmvb2rrqs3f" {};
+mDNSResponder = applePackage' "mDNSResponder" "1310.40.42" "macos-11.0.1" "0d0b9wwah9rg7rwrr29dxd6iy0y4rlmss3wcz2wcqmnd2qb9x8my" {};
+network_cmds = applePackage' "network_cmds" "606.40.2" "macos-11.0.1" "1dlslk67npvmxx5m50385kmn3ysxih2iv220hhzkin11f8abdjv7" {};
+objc4 = applePackage' "objc4" "818.2" "macos-11.0.1" "177gmh9m9ajy6mvcd2sf7gqydgljy44n3iih0yqsn1b13j784azx" {};
+PowerManagement = applePackage' "PowerManagement" "1132.50.3" "macos-11.0.1" "1n5yn6sc8w67g8iism6ilkyl33j46gcnlqcaq6k16zkngx6lprba" {};
+ppp = applePackage' "ppp" "877.40.2" "macos-11.0.1" "1z506z8ndvb1lfr4pypfy2bnig6qimhmq3yhjvqwfnliv91965iq" {};
+removefile = applePackage' "removefile" "49.40.3" "macos-11.0.1" "1fhp47awi15f02385r25qgw1ag5z0kr1v3kvgqm3r8i8yysfqvwp" {};
+Security = applePackage' "Security" "59754.41.1" "macos-11.0.1" "00kqgg7k80ba70ar2c02f0q9yrdgqcb56nb9z5g0bxwkvi40ryph" {};
+shell_cmds = applePackage' "shell_cmds" "216.40.4" "macos-11.0.1" "1mvp1fp34kkm4mi85fdn3i0l0gig4c0w09zg2mvkpxcf68cq2f69" {};
+system_cmds = applePackage' "system_cmds" "880.40.5" "macos-11.0.1" "1kys4vwfz4559sspdsfhmxc238nd8qgylqypza3zdzaqhfh7lx2x" {};
+text_cmds = applePackage' "text_cmds" "106" "macos-11.0.1" "0cpnfpllwpx20hbxzg5i5488gcjyi9adnbac1sd5hpv3bq6z1hs5" {};
+top = applePackage' "top" "129" "macos-11.0.1" "1nyz5mvq7js3zhsi3dwxl5fslg6m7nhlgc6p2hr889xgyl5prw8f" {};
+xnu = applePackage' "xnu" "7195.50.7.100.1" "macos-11.0.1" "14wqkqp3lcxgpm1sjnsysybrc4ppzkghwv3mb5nr5v8ml37prkib" {};
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/network_cmds/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/network_cmds/default.nix
@ -0,0 +1,50 @@
+{ lib, appleDerivation, xcbuildHook
+, libressl, Librpcsvc, xnu, libpcap, developer_cmds }:
+
+appleDerivation {
+  nativeBuildInputs = [ xcbuildHook ];
+  buildInputs = [ libressl xnu Librpcsvc libpcap developer_cmds ];
+
+  NIX_CFLAGS_COMPILE = " -I./unbound -I${xnu}/Library/Frameworks/System.framework/Headers/";
+
+  # "spray" requires some files that aren't compiling correctly in xcbuild.
+  # "rtadvd" seems to fail with some missing constants.
+  # "traceroute6" and "ping6" require ipsec which doesn't build correctly
+  patchPhase = ''
+    substituteInPlace network_cmds.xcodeproj/project.pbxproj \
+      --replace "7294F0EA0EE8BAC80052EC88 /* PBXTargetDependency */," "" \
+      --replace "7216D34D0EE89FEC00AE70E4 /* PBXTargetDependency */," "" \
+      --replace "72CD1D9C0EE8C47C005F825D /* PBXTargetDependency */," "" \
+      --replace "7216D2C20EE89ADF00AE70E4 /* PBXTargetDependency */," ""
+  '';
+
+  # temporary install phase until xcodebuild has "install" support
+  installPhase = ''
+    for f in Products/Release/*; do
+      if [ -f $f ]; then
+        install -D $f $out/bin/$(basename $f)
+      fi
+    done
+
+    for n in 1 5; do
+      mkdir -p $out/share/man/man$n
+      install */*.$n $out/share/man/man$n
+    done
+
+    # TODO: patch files to load from $out/ instead of /usr/
+
+    # mkdir -p $out/etc/
+    # install rtadvd.tproj/rtadvd.conf ip6addrctl.tproj/ip6addrctl.conf $out/etc/
+
+    # mkdir -p $out/local/OpenSourceVersions/
+    # install network_cmds.plist $out/local/OpenSourceVersions/
+
+    # mkdir -p $out/System/Library/LaunchDaemons
+    # install kdumpd.tproj/com.apple.kdumpd.plist $out/System/Library/LaunchDaemons
+ '';
+
+  meta = {
+    platforms = lib.platforms.darwin;
+    maintainers = with lib.maintainers; [ matthewbauer ];
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/objc4/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/objc4/default.nix
@ -0,0 +1,37 @@
+{ appleDerivation, darwin-stubs }:
+
+appleDerivation {
+  phases = [ "unpackPhase" "installPhase" ];
+
+  # Not strictly necessary, since libSystem depends on it, but it's nice to be explicit so we
+  # can easily find out what's impure.
+  __propagatedImpureHostDeps = [
+    "/usr/lib/libauto.dylib"
+    "/usr/lib/libc++abi.dylib"
+    "/usr/lib/libc++.1.dylib"
+    "/usr/lib/libSystem.B.dylib"
+  ];
+
+  installPhase = ''
+    mkdir -p $out/include/objc $out/lib
+    cp ${darwin-stubs}/usr/lib/libobjc.A.tbd $out/lib/libobjc.A.tbd
+    ln -s libobjc.A.tbd $out/lib/libobjc.tbd
+    cp runtime/OldClasses.subproj/List.h $out/include/objc/List.h
+    cp runtime/NSObjCRuntime.h $out/include/objc/NSObjCRuntime.h
+    cp runtime/NSObject.h $out/include/objc/NSObject.h
+    cp runtime/Object.h $out/include/objc/Object.h
+    cp runtime/Protocol.h $out/include/objc/Protocol.h
+    cp runtime/hashtable.h $out/include/objc/hashtable.h
+    cp runtime/hashtable2.h $out/include/objc/hashtable2.h
+    cp runtime/message.h $out/include/objc/message.h
+    cp runtime/objc-api.h $out/include/objc/objc-api.h
+    cp runtime/objc-auto.h $out/include/objc/objc-auto.h
+    cp runtime/objc-class.h $out/include/objc/objc-class.h
+    cp runtime/objc-exception.h $out/include/objc/objc-exception.h
+    cp runtime/objc-load.h $out/include/objc/objc-load.h
+    cp runtime/objc-runtime.h $out/include/objc/objc-runtime.h
+    cp runtime/objc-sync.h $out/include/objc/objc-sync.h
+    cp runtime/objc.h $out/include/objc/objc.h
+    cp runtime/runtime.h $out/include/objc/runtime.h
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/objc4/objc-probes.h
+++ b/pkgs/os-specific/darwin/apple-source-releases/objc4/objc-probes.h
@ -0,0 +1,65 @@
+/*
+ * Generated by dtrace(1M).
+ */
+
+#ifndef _OBJC_PROBES_H
+#define _OBJC_PROBES_H
+
+#include <unistd.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#define OBJC_RUNTIME_STABILITY "___dtrace_stability$objc_runtime$v1$1_1_0_1_1_0_1_1_0_1_1_0_1_1_0"
+
+#define OBJC_RUNTIME_TYPEDEFS "___dtrace_typedefs$objc_runtime$v2"
+
+#if !defined(DTRACE_PROBES_DISABLED) || !DTRACE_PROBES_DISABLED
+
+#define OBJC_RUNTIME_OBJC_EXCEPTION_RETHROW() \
+do { \
+  __asm__ volatile(".reference " OBJC_RUNTIME_TYPEDEFS); \
+  __dtrace_probe$objc_runtime$objc_exception_rethrow$v1(); \
+  __asm__ volatile(".reference " OBJC_RUNTIME_STABILITY); \
+} while (0)
+#define OBJC_RUNTIME_OBJC_EXCEPTION_RETHROW_ENABLED() \
+  ({ int _r = __dtrace_isenabled$objc_runtime$objc_exception_rethrow$v1(); \
+    __asm__ volatile(""); \
+    _r; })
+#define OBJC_RUNTIME_OBJC_EXCEPTION_THROW(arg0) \
+do { \
+  __asm__ volatile(".reference " OBJC_RUNTIME_TYPEDEFS); \
+  __dtrace_probe$objc_runtime$objc_exception_throw$v1$766f6964202a(arg0); \
+  __asm__ volatile(".reference " OBJC_RUNTIME_STABILITY); \
+} while (0)
+#define OBJC_RUNTIME_OBJC_EXCEPTION_THROW_ENABLED() \
+  ({ int _r = __dtrace_isenabled$objc_runtime$objc_exception_throw$v1(); \
+    __asm__ volatile(""); \
+    _r; })
+
+
+extern void __dtrace_probe$objc_runtime$objc_exception_rethrow$v1(void);
+extern int __dtrace_isenabled$objc_runtime$objc_exception_rethrow$v1(void);
+extern void __dtrace_probe$objc_runtime$objc_exception_throw$v1$766f6964202a(const void *);
+extern int __dtrace_isenabled$objc_runtime$objc_exception_throw$v1(void);
+
+#else
+
+#define OBJC_RUNTIME_OBJC_EXCEPTION_RETHROW() \
+do { \
+  } while (0)
+#define OBJC_RUNTIME_OBJC_EXCEPTION_RETHROW_ENABLED() (0)
+#define OBJC_RUNTIME_OBJC_EXCEPTION_THROW(arg0) \
+do { \
+  } while (0)
+#define OBJC_RUNTIME_OBJC_EXCEPTION_THROW_ENABLED() (0)
+
+#endif /* !defined(DTRACE_PROBES_DISABLED) || !DTRACE_PROBES_DISABLED */
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif  /* _OBJC_PROBES_H */
--- a/pkgs/os-specific/darwin/apple-source-releases/objc4/pure.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/objc4/pure.nix
@ -0,0 +1,118 @@
+{ stdenv, fetchapplesource, libauto, launchd, libc_old, libunwind }:
+
+stdenv.mkDerivation rec {
+  version = "551.1";
+  pname = "objc4";
+
+  src = fetchapplesource {
+    inherit version;
+    name   = "objc4";
+    sha256 = "1jrdb6yyb5jwwj27c1r0nr2y2ihqjln8ynj61mpkvp144c1cm5bg";
+  };
+
+  patches = [ ./spinlocks.patch ];
+
+  buildInputs = [ libauto launchd libc_old libunwind ];
+
+  buildPhase = ''
+    cp ${./objc-probes.h} runtime/objc-probes.h
+
+    mkdir -p build/include/objc
+
+    cp runtime/hashtable.h               build/include/objc/hashtable.h
+    cp runtime/OldClasses.subproj/List.h build/include/objc/List.h
+    cp runtime/hashtable2.h              build/include/objc/hashtable2.h
+    cp runtime/message.h                 build/include/objc/message.h
+    cp runtime/objc-api.h                build/include/objc/objc-api.h
+    cp runtime/objc-auto.h               build/include/objc/objc-auto.h
+    cp runtime/objc-class.h              build/include/objc/objc-class.h
+    cp runtime/objc-exception.h          build/include/objc/objc-exception.h
+    cp runtime/objc-load.h               build/include/objc/objc-load.h
+    cp runtime/objc-sync.h               build/include/objc/objc-sync.h
+    cp runtime/objc.h                    build/include/objc/objc.h
+    cp runtime/objc-runtime.h            build/include/objc/objc-runtime.h
+    cp runtime/Object.h                  build/include/objc/Object.h
+    cp runtime/Protocol.h                build/include/objc/Protocol.h
+    cp runtime/runtime.h                 build/include/objc/runtime.h
+    cp runtime/NSObject.h                build/include/objc/NSObject.h
+    cp runtime/NSObjCRuntime.h           build/include/objc/NSObjCRuntime.h
+
+    # These would normally be in local/include but we don't do local, so they're
+    # going in with the others
+    cp runtime/maptable.h                build/include/objc/maptable.h
+    cp runtime/objc-abi.h                build/include/objc/objc-abi.h
+    cp runtime/objc-auto-dump.h          build/include/objc/objc-auto-dump.h
+    cp runtime/objc-gdb.h                build/include/objc/objc-gdb.h
+    cp runtime/objc-internal.h           build/include/objc/objc-internal.h
+
+    cc -o markgc markgc.c
+
+    FLAGS="-Wno-deprecated-register -Wno-unknown-pragmas -Wno-deprecated-objc-isa-usage -Wno-invalid-offsetof -Wno-inline-new-delete  -Wno-cast-of-sel-type -Iruntime -Ibuild/include -Iruntime/Accessors.subproj -D_LIBCPP_VISIBLE= -DOS_OBJECT_USE_OBJC=0 -DNDEBUG=1"
+
+    cc -std=gnu++11 $FLAGS -c runtime/hashtable2.mm
+    cc -std=gnu++11 $FLAGS -c runtime/maptable.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-auto.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-cache.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-class-old.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-class.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-errors.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-exception.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-file.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-initialize.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-layout.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-load.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-loadmethod.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-lockdebug.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-runtime-new.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-runtime-old.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-runtime.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-sel-set.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-sel.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-sync.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-typeencoding.mm
+    cc -std=gnu++11 $FLAGS -c runtime/Object.mm
+    cc -std=gnu++11 $FLAGS -c runtime/Protocol.mm
+
+    cc -std=gnu++11 $FLAGS -c runtime/objc-references.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-os.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-auto-dump.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-file-old.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-block-trampolines.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-externalref.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-weak.mm
+    cc -std=gnu++11 $FLAGS -c runtime/NSObject.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-opt.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-cache-old.mm
+    cc -std=gnu++11 $FLAGS -c runtime/objc-sel-old.mm
+
+    cc -std=gnu++11 $FLAGS -c runtime/Accessors.subproj/objc-accessors.mm
+
+    cc $FLAGS -c runtime/objc-sel-table.s
+
+    cc $FLAGS -c runtime/OldClasses.subproj/List.m
+    cc $FLAGS -c runtime/Messengers.subproj/objc-msg-arm.s
+    cc $FLAGS -c runtime/Messengers.subproj/objc-msg-i386.s
+    cc $FLAGS -c runtime/Messengers.subproj/objc-msg-x86_64.s
+    cc $FLAGS -c runtime/Messengers.subproj/objc-msg-simulator-i386.s
+
+    cc $FLAGS -c runtime/a1a2-blocktramps-i386.s
+    cc $FLAGS -c runtime/a2a3-blocktramps-i386.s
+
+    cc $FLAGS -c runtime/a1a2-blocktramps-x86_64.s
+    cc $FLAGS -c runtime/a2a3-blocktramps-x86_64.s
+
+    cc $FLAGS -c runtime/a1a2-blocktramps-arm.s
+    cc $FLAGS -c runtime/a2a3-blocktramps-arm.s
+
+    c++ -Wl,-no_dtrace_dof --stdlib=libc++ -dynamiclib -lauto -install_name $out/lib/libobjc.dylib -o libobjc.dylib *.o
+
+    ./markgc -p libobjc.dylib
+  '';
+
+  installPhase = ''
+    mkdir -p $out/include $out/lib
+
+    mv build/include/objc $out/include
+    mv libobjc.dylib $out/lib
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/objc4/spinlocks.patch
+++ b/pkgs/os-specific/darwin/apple-source-releases/objc4/spinlocks.patch
@ -0,0 +1,107 @@
+--- objc4-551.1/runtime/objc-os.h	2013-06-10 21:16:15.000000000 -0400
+++ ../objc4-551.1/runtime/objc-os.h	2015-01-19 01:01:36.000000000 -0500
+@@ -77,27 +77,72 @@
+ #   include <mach-o/getsect.h>
+ #   include <mach-o/dyld_priv.h>
+ #   include <malloc/malloc.h>
+-#   include <os/lock_private.h>
+ #   include <libkern/OSAtomic.h>
+ #   include <libkern/OSCacheControl.h>
+-#   include <System/pthread_machdep.h>
+ #   include "objc-probes.h"  // generated dtrace probe definitions.
+ 
+#define __PTK_FRAMEWORK_OBJC_KEY5 45
+#define __PTK_FRAMEWORK_OBJC_KEY6 46
+#define __PTK_FRAMEWORK_OBJC_KEY7 47
+#define __PTK_FRAMEWORK_OBJC_KEY8 48
+#define __PTK_FRAMEWORK_OBJC_KEY9 49
+
+extern "C" int pthread_key_init_np(int, void (*)(void *));
+
+ // Some libc functions call objc_msgSend() 
+ // so we can't use them without deadlocks.
+ void syslog(int, const char *, ...) UNAVAILABLE_ATTRIBUTE;
+ void vsyslog(int, const char *, va_list) UNAVAILABLE_ATTRIBUTE;
+ 
+#if defined(__i386__) || defined(__x86_64__)
+
+// Inlined spinlock.
+// Not for arm on iOS because it hurts uniprocessor performance.
+
+#define ARR_SPINLOCK_INIT 0
+// XXX -- Careful: OSSpinLock isn't volatile, but should be
+typedef volatile int ARRSpinLock;
+__attribute__((always_inline))
+static inline void ARRSpinLockLock(ARRSpinLock *l)
+{
+    unsigned y;
+again:
+    if (__builtin_expect(__sync_lock_test_and_set(l, 1), 0) == 0) {
+        return;
+    }
+    for (y = 1000; y; y--) {
+#if defined(__i386__) || defined(__x86_64__)
+        asm("pause");
+#endif
+        if (*l == 0) goto again;
+    }
+    thread_switch(THREAD_NULL, SWITCH_OPTION_DEPRESS, 1);
+    goto again;
+}
+__attribute__((always_inline))
+static inline void ARRSpinLockUnlock(ARRSpinLock *l)
+{
+    __sync_lock_release(l);
+}
+__attribute__((always_inline))
+static inline int ARRSpinLockTry(ARRSpinLock *l)
+{
+    return __sync_bool_compare_and_swap(l, 0, 1);
+}
+
+#define spinlock_t ARRSpinLock
+#define spinlock_trylock(l) ARRSpinLockTry(l)
+#define spinlock_lock(l) ARRSpinLockLock(l)
+#define spinlock_unlock(l) ARRSpinLockUnlock(l)
+#define SPINLOCK_INITIALIZER ARR_SPINLOCK_INIT 
+ 
+-#define spinlock_t os_lock_handoff_s
+-#define spinlock_trylock(l) os_lock_trylock(l)
+-#define spinlock_lock(l) os_lock_lock(l)
+-#define spinlock_unlock(l) os_lock_unlock(l)
+-#define SPINLOCK_INITIALIZER OS_LOCK_HANDOFF_INIT
+#endif
+ 
+ 
+ #if !TARGET_OS_IPHONE
+-#   include <CrashReporterClient.h>
+#define CRSetCrashLogMessage(msg)
+#define CRGetCrashLogMessage() 0
+#define CRSetCrashLogMessage2(msg)
+ #else
+     // CrashReporterClient not yet available on iOS
+     __BEGIN_DECLS
+@@ -594,21 +639,13 @@
+ { 
+     assert(is_valid_direct_key(k));
+ 
+-    if (_pthread_has_direct_tsd()) {
+-        return _pthread_getspecific_direct(k);
+-    } else {
+-        return pthread_getspecific(k);
+-    }
+    return pthread_getspecific(k);
+ }
+ static inline void tls_set_direct(tls_key_t k, void *value) 
+ { 
+     assert(is_valid_direct_key(k));
+ 
+-    if (_pthread_has_direct_tsd()) {
+-        _pthread_setspecific_direct(k, value);
+-    } else {
+-        pthread_setspecific(k, value);
+-    }
+    pthread_setspecific(k, value);
+ }
+ 
+ // not arm
--- a/pkgs/os-specific/darwin/apple-source-releases/ppp/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/ppp/default.nix
@ -0,0 +1,15 @@
+{ appleDerivation', stdenv }:
+
+appleDerivation' stdenv {
+  dontBuild = true;
+  installPhase = ''
+    mkdir -p $out/include/ppp
+
+    cp Controller/ppp_msg.h                    $out/include/ppp
+    cp Controller/pppcontroller_types.h        $out/include/ppp
+    cp Controller/pppcontroller_types.h        $out/include
+    cp Controller/pppcontroller.defs           $out/include/ppp
+    cp Controller/pppcontroller_mach_defines.h $out/include
+    cp Controller/PPPControllerPriv.h          $out/include/ppp
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/removefile/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/removefile/default.nix
@ -0,0 +1,13 @@
+{ appleDerivation', stdenvNoCC }:
+
+appleDerivation' stdenvNoCC {
+  installPhase = ''
+    mkdir -p $out/include/
+    cp removefile.h checkint.h $out/include/
+  '';
+
+  appleHeaders = ''
+    checkint.h
+    removefile.h
+  '';
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/shell_cmds/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/shell_cmds/default.nix
@ -0,0 +1,50 @@
+{ lib, appleDerivation, xcbuildHook, launchd }:
+
+appleDerivation {
+  nativeBuildInputs = [ xcbuildHook launchd ];
+
+  patchPhase = ''
+    # NOTE: these hashes must be recalculated for each version change
+
+    # disables:
+    # - su ('security/pam_appl.h' file not found)
+    # - find (Undefined symbol '_get_date')
+    # - w (Undefined symbol '_res_9_init')
+    # - expr
+    substituteInPlace shell_cmds.xcodeproj/project.pbxproj \
+      --replace "FCBA168714A146D000AA698B /* PBXTargetDependency */," "" \
+      --replace "FCBA165914A146D000AA698B /* PBXTargetDependency */," "" \
+      --replace "FCBA169514A146D000AA698B /* PBXTargetDependency */," "" \
+      --replace "FCBA165514A146D000AA698B /* PBXTargetDependency */," ""
+
+    # disable w, test install
+    # get rid of permission stuff
+    substituteInPlace xcodescripts/install-files.sh \
+      --replace 'ln -f "$BINDIR/w" "$BINDIR/uptime"' "" \
+      --replace 'ln -f "$DSTROOT/bin/test" "$DSTROOT/bin/["' "" \
+      --replace "-o root -g wheel -m 0755" "" \
+      --replace "-o root -g wheel -m 0644" ""
+  '';
+
+  # temporary install phase until xcodebuild has "install" support
+  installPhase = ''
+    for f in Products/Release/*; do
+      if [ -f $f ]; then
+        install -D $f $out/usr/bin/$(basename $f)
+      fi
+    done
+
+    export DSTROOT=$out
+    export SRCROOT=$PWD
+    . xcodescripts/install-files.sh
+
+    mv $out/usr/* $out
+    mv $out/private/etc $out
+    rmdir $out/usr $out/private
+  '';
+
+  meta = {
+    platforms = lib.platforms.darwin;
+    maintainers = with lib.maintainers; [ matthewbauer ];
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/system_cmds/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/system_cmds/default.nix
@ -0,0 +1,109 @@
+{ stdenv, appleDerivation, lib
+, libutil, Librpcsvc, apple_sdk, pam, CF, openbsm }:
+
+appleDerivation {
+  # xcbuild fails with:
+  # /nix/store/fc0rz62dh8vr648qi7hnqyik6zi5sqx8-xcbuild-wrapper/nix-support/setup-hook: line 1:  9083 Segmentation fault: 11  xcodebuild OTHER_CFLAGS="$NIX_CFLAGS_COMPILE" OTHER_CPLUSPLUSFLAGS="$NIX_CFLAGS_COMPILE" OTHER_LDFLAGS="$NIX_LDFLAGS" build
+  # see issue facebook/xcbuild#188
+  # buildInputs = [ xcbuild ];
+
+  buildInputs = [ libutil Librpcsvc apple_sdk.frameworks.OpenDirectory pam CF
+                  apple_sdk.frameworks.IOKit openbsm ];
+  # NIX_CFLAGS_COMPILE = lib.optionalString hostPlatform.isi686 "-D__i386__"
+  #                    + lib.optionalString hostPlatform.isx86_64 "-D__x86_64__"
+  #                    + lib.optionalString hostPlatform.isAarch32 "-D__arm__";
+  NIX_CFLAGS_COMPILE = [ "-DDAEMON_UID=1"
+                         "-DDAEMON_GID=1"
+                         "-DDEFAULT_AT_QUEUE='a'"
+                         "-DDEFAULT_BATCH_QUEUE='b'"
+                         "-DPERM_PATH=\"/usr/lib/cron/\""
+                         "-DOPEN_DIRECTORY"
+                         "-DNO_DIRECT_RPC"
+                         "-DAPPLE_GETCONF_UNDERSCORE"
+                         "-DAPPLE_GETCONF_SPEC"
+                         "-DUSE_PAM"
+                         "-DUSE_BSM_AUDIT"
+                         "-D_PW_NAME_LEN=MAXLOGNAME"
+                         "-D_PW_YPTOKEN=\"__YP!\""
+                         "-DAHZV1=64 "
+                         "-DAU_SESSION_FLAG_HAS_TTY=0x4000"
+                         "-DAU_SESSION_FLAG_HAS_AUTHENTICATED=0x4000"
+                       ] ++ lib.optional (!stdenv.isLinux) " -D__FreeBSD__ ";
+
+  patchPhase = ''
+    substituteInPlace login.tproj/login.c \
+      --replace bsm/audit_session.h bsm/audit.h
+    substituteInPlace login.tproj/login_audit.c \
+      --replace bsm/audit_session.h bsm/audit.h
+  '' + lib.optionalString stdenv.isAarch64 ''
+    substituteInPlace sysctl.tproj/sysctl.c \
+      --replace "GPROF_STATE" "0"
+    substituteInPlace login.tproj/login.c \
+      --replace "defined(__arm__)" "defined(__arm__) || defined(__arm64__)"
+  '';
+
+  buildPhase = ''
+    for dir in *.tproj; do
+      name=$(basename $dir)
+      name=''${name%.tproj}
+
+      CFLAGS=""
+      case $name in
+           arch) CFLAGS="-framework CoreFoundation";;
+           atrun) CFLAGS="-Iat.tproj";;
+           chkpasswd)
+             CFLAGS="-framework OpenDirectory -framework CoreFoundation -lpam";;
+           getconf)
+               for f in getconf.tproj/*.gperf; do
+                   cfile=''${f%.gperf}.c
+                   LC_ALL=C awk -f getconf.tproj/fake-gperf.awk $f > $cfile
+               done
+           ;;
+           iostat) CFLAGS="-framework IOKit -framework CoreFoundation";;
+           login) CFLAGS="-lbsm -lpam";;
+           nvram) CFLAGS="-framework CoreFoundation -framework IOKit";;
+           sadc) CFLAGS="-framework IOKit -framework CoreFoundation";;
+           sar) CFLAGS="-Isadc.tproj";;
+      esac
+
+      echo "Building $name"
+
+      case $name in
+
+           # These are all broken currently.
+           arch) continue;;
+           chpass) continue;;
+           dirhelper) continue;;
+           dynamic_pager) continue;;
+           fs_usage) continue;;
+           latency) continue;;
+           pagesize) continue;;
+           passwd) continue;;
+           reboot) continue;;
+           sc_usage) continue;;
+           shutdown) continue;;
+           trace) continue;;
+
+           *) cc $dir/*.c -I''${dir} $CFLAGS -o $name ;;
+      esac
+    done
+  '';
+
+  installPhase = ''
+    for dir in *.tproj; do
+      name=$(basename $dir)
+      name=''${name%.tproj}
+      [ -x $name ] && install -D $name $out/bin/$name
+      for n in 1 2 3 4 5 6 7 8 9; do
+        for f in $dir/*.$n; do
+          install -D $f $out/share/man/man$n/$(basename $f)
+        done
+      done
+    done
+  '';
+
+  meta = {
+    platforms = lib.platforms.darwin;
+    maintainers = with lib.maintainers; [ shlevy matthewbauer ];
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/text_cmds/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/text_cmds/default.nix
@ -0,0 +1,29 @@
+{ lib, appleDerivation, xcbuildHook, ncurses, bzip2, zlib, xz }:
+
+appleDerivation {
+  nativeBuildInputs = [ xcbuildHook ];
+  buildInputs = [ ncurses bzip2 zlib xz ];
+
+  # patches to use ncursees
+  # disables md5
+  patchPhase = ''
+    substituteInPlace text_cmds.xcodeproj/project.pbxproj \
+          --replace 'FC6C98FB149A94EB00DDCC47 /* libcurses.dylib */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.dylib"; name = libcurses.dylib; path = /usr/lib/libcurses.dylib; sourceTree = "<absolute>"; };' 'FC6C98FB149A94EB00DDCC47 /* libncurses.dylib */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.dylib"; name = libncurses.dylib; path = /usr/lib/libncurses.dylib; sourceTree = "<absolute>"; };' \
+      --replace 'FC7A7EB5149875E00086576A /* PBXTargetDependency */,' ""
+  '';
+
+  installPhase = ''
+    for f in Products/Release/*; do
+      if [ -f $f ]; then
+        install -D $f $out/bin/$(basename $f)
+      fi
+    done
+  '';
+
+  NIX_CFLAGS_COMPILE=[ "-Wno-error=format-security" ]; # hardeningDisable doesn't cut it
+
+  meta = {
+    platforms = lib.platforms.darwin;
+    maintainers = with lib.maintainers; [ matthewbauer ];
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/top/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/top/default.nix
@ -0,0 +1,16 @@
+{xcbuildHook, appleDerivation, apple_sdk, ncurses, libutil, lib}:
+
+appleDerivation {
+  nativeBuildInputs = [ xcbuildHook ];
+  buildInputs = [ apple_sdk.frameworks.IOKit ncurses libutil ];
+  NIX_LDFLAGS = "-lutil";
+  installPhase = ''
+    install -D Products/Release/libtop.a $out/lib/libtop.a
+    install -D Products/Release/libtop.h $out/include/libtop.h
+    install -D Products/Release/top $out/bin/top
+  '';
+  meta = {
+    platforms = lib.platforms.darwin;
+    maintainers = with lib.maintainers; [ matthewbauer ];
+  };
+}
--- a/pkgs/os-specific/darwin/apple-source-releases/xnu/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/xnu/default.nix
@ -0,0 +1,145 @@
+{ appleDerivation', lib, stdenv, stdenvNoCC, buildPackages
+, bootstrap_cmds, bison, flex
+, gnum4, unifdef, perl, python3
+, headersOnly ? true
+}:
+
+appleDerivation' (if headersOnly then stdenvNoCC else stdenv) ({
+  depsBuildBuild = [ buildPackages.stdenv.cc ];
+
+  nativeBuildInputs = [ bootstrap_cmds bison flex gnum4 unifdef perl python3 ];
+
+  patches = [ ./python3.patch ];
+
+  postPatch = ''
+    substituteInPlace Makefile \
+      --replace "/bin/" "" \
+      --replace "MAKEJOBS := " '# MAKEJOBS := '
+
+    substituteInPlace makedefs/MakeInc.cmd \
+      --replace "/usr/bin/" "" \
+      --replace "/bin/" "" \
+      --replace "-Werror " ""
+
+    substituteInPlace makedefs/MakeInc.def \
+      --replace "-c -S -m" "-c -m"
+
+    substituteInPlace makedefs/MakeInc.top \
+      --replace "MEMORY_SIZE := " 'MEMORY_SIZE := 1073741824 # '
+
+    substituteInPlace libkern/kxld/Makefile \
+      --replace "-Werror " ""
+
+    substituteInPlace SETUP/kextsymboltool/Makefile \
+      --replace "-lstdc++" "-lc++"
+
+    substituteInPlace libsyscall/xcodescripts/mach_install_mig.sh \
+      --replace "/usr/include" "/include" \
+      --replace "/usr/local/include" "/include" \
+      --replace 'MIG=`' "# " \
+      --replace 'MIGCC=`' "# " \
+      --replace " -o 0" "" \
+      --replace '$SRC/$mig' '-I$DSTROOT/include $SRC/$mig' \
+      --replace '$SRC/servers/netname.defs' '-I$DSTROOT/include $SRC/servers/netname.defs' \
+      --replace '$BUILT_PRODUCTS_DIR/mig_hdr' '$BUILT_PRODUCTS_DIR'
+
+    patchShebangs .
+  '';
+
+  PLATFORM = "MacOSX";
+  SDKVERSION = "10.11";
+  CC = "${stdenv.cc.targetPrefix or ""}cc";
+  CXX = "${stdenv.cc.targetPrefix or ""}c++";
+  MIG = "mig";
+  MIGCOM = "migcom";
+  STRIP = "${stdenv.cc.bintools.targetPrefix or ""}strip";
+  NM = "${stdenv.cc.bintools.targetPrefix or ""}nm";
+  UNIFDEF = "unifdef";
+  DSYMUTIL = "dsymutil";
+  HOST_OS_VERSION = "10.10";
+  HOST_CC = "${buildPackages.stdenv.cc.targetPrefix or ""}cc";
+  HOST_FLEX = "flex";
+  HOST_BISON = "bison";
+  HOST_GM4 = "m4";
+  MIGCC = "cc";
+  ARCHS = "x86_64";
+
+  NIX_CFLAGS_COMPILE = "-Wno-error";
+
+  preBuild = ''
+    # This is a bit of a hack...
+    mkdir -p sdk/usr/local/libexec
+
+    cat > sdk/usr/local/libexec/availability.pl <<EOF
+      #!$SHELL
+      if [ "\$1" == "--macosx" ]; then
+        echo 10.0 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 10.9 10.10 10.11
+      elif [ "\$1" == "--ios" ]; then
+        echo 2.0 2.1 2.2 3.0 3.1 3.2 4.0 4.1 4.2 4.3 5.0 5.1 6.0 6.1 7.0 8.0 9.0
+      fi
+    EOF
+    chmod +x sdk/usr/local/libexec/availability.pl
+
+    export SDKROOT_RESOLVED=$PWD/sdk
+    export HOST_SDKROOT_RESOLVED=$PWD/sdk
+
+    export BUILT_PRODUCTS_DIR=.
+    export DSTROOT=$out
+  '';
+
+  buildFlags = lib.optional headersOnly "exporthdrs";
+  installTargets = lib.optional headersOnly "installhdrs";
+
+  postInstall = lib.optionalString headersOnly ''
+    mv $out/usr/include $out
+
+    (cd BUILD/obj/EXPORT_HDRS && find -type f -exec install -D \{} $out/include/\{} \;)
+
+    # TODO: figure out why I need to do this
+    cp libsyscall/wrappers/*.h $out/include
+    install -D libsyscall/os/tsd.h $out/include/os/tsd.h
+    cp EXTERNAL_HEADERS/AssertMacros.h $out/include
+    cp EXTERNAL_HEADERS/Availability*.h $out/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/
+    cp -r EXTERNAL_HEADERS/corecrypto $out/include
+
+    # Build the mach headers we crave
+    export SRCROOT=$PWD/libsyscall
+    export DERIVED_SOURCES_DIR=$out/include
+    export SDKROOT=$out
+    export OBJROOT=$PWD
+    export BUILT_PRODUCTS_DIR=$out
+    libsyscall/xcodescripts/mach_install_mig.sh
+
+    # Get rid of the System prefix
+    mv $out/System/* $out/
+    rmdir $out/System
+
+    # TODO: do I need this?
+    mv $out/internal_hdr/include/mach/*.h $out/include/mach
+
+    # Get rid of some junk lying around
+    rm -rf $out/internal_hdr $out/usr $out/local
+
+    # Add some symlinks
+    ln -s $out/Library/Frameworks/System.framework/Versions/B \
+          $out/Library/Frameworks/System.framework/Versions/Current
+    ln -s $out/Library/Frameworks/System.framework/Versions/Current/PrivateHeaders \
+          $out/Library/Frameworks/System.framework/Headers
+
+    # IOKit (and possibly the others) is incomplete,
+    # so let's not make it visible from here...
+    mkdir $out/Library/PrivateFrameworks
+    mv $out/Library/Frameworks/IOKit.framework $out/Library/PrivateFrameworks
+  '';
+
+  appleHeaders = builtins.readFile ./headers.txt;
+} // lib.optionalAttrs headersOnly {
+  HOST_CODESIGN = "echo";
+  HOST_CODESIGN_ALLOCATE = "echo";
+  LIPO = "echo";
+  LIBTOOL = "echo";
+  CTFCONVERT = "echo";
+  CTFMERGE = "echo";
+  CTFINSERT = "echo";
+  NMEDIT = "echo";
+})
--- a/Show more
+++ b/Show more