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/development/libraries/cpp-hocon/default.nix

@@ -0,0 +1,32 @@
+{ lib, stdenv, fetchFromGitHub, cmake, boost, curl, leatherman }:
+
+stdenv.mkDerivation rec {
+  pname = "cpp-hocon";
+  version = "0.3.0";
+
+  src = fetchFromGitHub {
+    sha256 = "0b24anpwkmvbsn5klnr58vxksw00ci9pjhwzx7a61kplyhsaiydw";
+    rev = version;
+    repo = "cpp-hocon";
+    owner = "puppetlabs";
+  };
+
+  postPatch = ''
+    sed -i -e '/add_subdirectory(tests)/d' lib/CMakeLists.txt
+  '';
+
+  NIX_CFLAGS_COMPILE = "-Wno-error";
+
+  nativeBuildInputs = [ cmake ];
+
+  buildInputs = [ boost curl leatherman ];
+
+  meta = with lib; {
+    inherit (src.meta) homepage;
+    description = "A C++ port of the Typesafe Config library";
+    license = licenses.asl20;
+    maintainers = [ maintainers.womfoo ];
+    platforms = platforms.unix;
+  };
+
+}