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/ptex/default.nix

@@ -0,0 +1,33 @@
+{ lib, stdenv, fetchFromGitHub, zlib, cmake, pkg-config }:
+
+stdenv.mkDerivation rec
+{
+  pname = "ptex";
+  version = "2.4.1";
+
+  src = fetchFromGitHub {
+    owner = "wdas";
+    repo = "ptex";
+    rev = "v${version}";
+    sha256 = "sha256-TuwgZJHvQUqBEFeZYvzpi+tmXB97SkOairYnuUahtSA=";
+  };
+
+  outputs = [ "bin" "dev" "out" "lib" ];
+
+  nativeBuildInputs = [ cmake ];
+  buildInputs = [ zlib pkg-config ];
+
+  # Can be removed in the next release
+  # https://github.com/wdas/ptex/pull/42
+  patchPhase = ''
+    echo v${version} >version
+  '';
+
+  meta = with lib; {
+    description = "Per-Face Texture Mapping for Production Rendering";
+    homepage = "http://ptex.us/";
+    license = licenses.bsd3;
+    platforms = platforms.all;
+    maintainers = [ maintainers.guibou ];
+  };
+}