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/os-specific/linux/jool/cli.nix

@@ -0,0 +1,29 @@
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config, libnl, iptables }:
+
+let
+  sourceAttrs = (import ./source.nix) { inherit fetchFromGitHub; };
+in
+
+stdenv.mkDerivation {
+  pname = "jool-cli";
+  version = sourceAttrs.version;
+
+  src = sourceAttrs.src;
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+  buildInputs = [ libnl iptables ];
+
+  makeFlags = [ "-C" "src/usr" ];
+
+  prePatch = ''
+    sed -e 's%^XTABLES_SO_DIR = .*%XTABLES_SO_DIR = '"$out"'/lib/xtables%g' -i src/usr/iptables/Makefile
+  '';
+
+  meta = with lib; {
+    homepage = "https://www.jool.mx/";
+    description = "Fairly compliant SIIT and Stateful NAT64 for Linux - CLI tools";
+    platforms = platforms.linux;
+    license = licenses.gpl2;
+    maintainers = with maintainers; [ fpletz ];
+  };
+}

pkgs/os-specific/linux/jool/default.nix

@@ -0,0 +1,33 @@
+{ lib, stdenv, fetchFromGitHub, kernel }:
+
+let
+  sourceAttrs = (import ./source.nix) { inherit fetchFromGitHub; };
+in
+
+stdenv.mkDerivation {
+  name = "jool-${sourceAttrs.version}-${kernel.version}";
+
+  src = sourceAttrs.src;
+
+  nativeBuildInputs = kernel.moduleBuildDependencies;
+  hardeningDisable = [ "pic" ];
+
+  prePatch = ''
+    sed -e 's@/lib/modules/\$(.*)@${kernel.dev}/lib/modules/${kernel.modDirVersion}@' -i src/mod/*/Makefile
+  '';
+
+  makeFlags = kernel.makeFlags ++ [
+    "-C src/mod"
+    "INSTALL_MOD_PATH=${placeholder "out"}"
+  ];
+
+  installTargets = "modules_install";
+
+  meta = with lib; {
+    homepage = "https://www.jool.mx/";
+    description = "Fairly compliant SIIT and Stateful NAT64 for Linux - kernel modules";
+    platforms = platforms.linux;
+    license = licenses.gpl2Only;
+    maintainers = with maintainers; [ fpletz ];
+  };
+}

pkgs/os-specific/linux/jool/source.nix

@@ -0,0 +1,11 @@
+{ fetchFromGitHub }:
+
+rec {
+  version = "4.1.7";
+  src = fetchFromGitHub {
+    owner = "NICMx";
+    repo = "Jool";
+    rev = "v${version}";
+    sha256 = "08z23mi6xkr6zzp0hzh1cppvl2y0177s0lnpxqbpy8jiii5fxw8f";
+  };
+}