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/vcg/default.nix

@@ -0,0 +1,29 @@
+{ lib, stdenv, fetchFromGitHub, eigen }:
+
+stdenv.mkDerivation rec {
+  pname = "vcg";
+  version = "1.0.1";
+
+  src = fetchFromGitHub {
+    owner = "cnr-isti-vclab";
+    repo = "vcglib";
+    rev = "v${version}";
+    sha256 = "0jh8jc8rn7rci8qr3q03q574fk2hsc3rllysck41j8xkr3rmxz2f";
+  };
+
+  propagatedBuildInputs = [ eigen ];
+
+  installPhase = ''
+    mkdir -p $out/include
+    cp -r vcg wrap $out/include
+    find $out -name \*.h -exec sed -i 's,<eigenlib/,<eigen3/,g' {} \;
+  '';
+
+  meta = with lib; {
+    homepage = "http://vcg.isti.cnr.it/vcglib/install.html";
+    description = "C++ library for manipulation, processing and displaying with OpenGL of triangle and tetrahedral meshes";
+    license = licenses.gpl3;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ abbradar ];
+  };
+}