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/graphics/directx-shader-compiler/default.nix

@@ -0,0 +1,43 @@
+{ lib, stdenv, fetchFromGitHub, cmake, ninja, python3, git }:
+
+stdenv.mkDerivation rec {
+  pname = "directx-shader-compiler";
+  version = "1.6.2112";
+
+  # Put headers in dev, there are lot of them which aren't necessary for
+  # using the compiler binary.
+  outputs = [ "out" "dev" ];
+
+  src = fetchFromGitHub {
+    owner = "microsoft";
+    repo = "DirectXShaderCompiler";
+    rev = "v${version}";
+    hash = "sha256-+oh7oWJCE0CLehnqpE2J9aIfMFbtfLAKwI9ETmCg/TA=";
+    fetchSubmodules = true;
+  };
+
+  nativeBuildInputs = [ cmake git ninja python3 ];
+
+  cmakeFlags = [ "-C../cmake/caches/PredefinedParams.cmake" ];
+
+  # The default install target installs heaps of LLVM stuff.
+  #
+  # Upstream issue: https://github.com/microsoft/DirectXShaderCompiler/issues/3276
+  #
+  # The following is based on the CI script:
+  # https://github.com/microsoft/DirectXShaderCompiler/blob/master/appveyor.yml#L63-L66
+  installPhase = ''
+    mkdir -p $out/bin $out/lib $dev/include
+    mv bin/dxc* $out/bin/
+    mv lib/libdxcompiler.so* lib/libdxcompiler.*dylib $out/lib/
+    cp -r $src/include/dxc $dev/include/
+  '';
+
+  meta = with lib; {
+    description = "A compiler to compile HLSL programs into DXIL and SPIR-V";
+    homepage = "https://github.com/microsoft/DirectXShaderCompiler";
+    platforms = with platforms; linux ++ darwin;
+    license = licenses.ncsa;
+    maintainers = with maintainers; [ expipiplus1 Flakebi ];
+  };
+}