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>

pkgs/tools/filesystems/mergerfs/default.nix

@@ -0,0 +1,41 @@
+{ lib, stdenv, fetchFromGitHub, automake, autoconf, pkg-config, gettext, libtool, pandoc, which, attr, libiconv }:
+
+stdenv.mkDerivation rec {
+  pname = "mergerfs";
+  version = "2.33.3";
+
+  src = fetchFromGitHub {
+    owner = "trapexit";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-hZA7AkFEuSHp84Zn+m9+VVr4UewbbzeQL1n2bkUOX0Y=";
+  };
+
+  nativeBuildInputs = [
+    automake autoconf pkg-config gettext libtool pandoc which
+  ];
+  prePatch = ''
+    sed -i -e '/chown/d' -e '/chmod/d' libfuse/Makefile
+  '';
+  buildInputs = [ attr libiconv ];
+
+  preConfigure = ''
+    echo "${version}" > VERSION
+  '';
+
+  makeFlags = [ "DESTDIR=${placeholder "out"}" "XATTR_AVAILABLE=1" "PREFIX=/" "SBINDIR=/bin" ];
+  enableParallelBuilding = true;
+
+  postFixup = ''
+    ln -srf $out/bin/mergerfs $out/bin/mount.fuse.mergerfs
+    ln -srf $out/bin/mergerfs $out/bin/mount.mergerfs
+  '';
+
+  meta = {
+    description = "A FUSE based union filesystem";
+    homepage = "https://github.com/trapexit/mergerfs";
+    license = lib.licenses.isc;
+    platforms = lib.platforms.linux;
+    maintainers = with lib.maintainers; [ jfrankenau makefu ];
+  };
+}

pkgs/tools/filesystems/mergerfs/tools.nix

@@ -0,0 +1,36 @@
+{ lib, stdenv, fetchFromGitHub, coreutils, makeWrapper
+, rsync, python3 }:
+
+stdenv.mkDerivation rec {
+  pname = "mergerfs-tools";
+  version = "20190411";
+
+  src = fetchFromGitHub {
+    owner = "trapexit";
+    repo = pname;
+    rev = "6e41fc5848c7cc4408caea86f3991c8cc2ac85a1";
+    sha256 = "0izswg6bya13scvb37l3gkl7mvi8q7l11p4hp4phdlcwh9jvdzcj";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+  buildInputs = [ python3 ];
+
+  makeFlags = [
+    "INSTALL=${coreutils}/bin/install"
+    "PREFIX=${placeholder "out"}"
+  ];
+
+  postInstall = with lib; ''
+    wrapProgram $out/bin/mergerfs.balance --prefix PATH : ${makeBinPath [ rsync ]}
+    wrapProgram $out/bin/mergerfs.dup --prefix PATH : ${makeBinPath [ rsync ]}
+    wrapProgram $out/bin/mergerfs.mktrash --prefix PATH : ${makeBinPath [ python3.pkgs.xattr ]}
+  '';
+
+  meta = with lib; {
+    description = "Optional tools to help manage data in a mergerfs pool";
+    homepage = "https://github.com/trapexit/mergerfs-tools";
+    license = licenses.isc;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ jfrankenau ];
+  };
+}