anchor.diff:    vc_intrinsics_src = fetchFromGitHub {
       owner = "intel";
       repo = "vc-intrinsics";
  -    rev = "e5ad7e02aa4aa21a3cd7b3e5d1f3ec9b95f58872";
  -    sha256 = "Vg1mngwpIQ3Tik0GgRXPG22lE4sLEAEFch492G2aIXs=";
  +    rev = "v0.3.0";
  +    sha256 = "sha256-1Rm4TCERTOcPGWJF+yNoKeB9x3jfqnh7Vlv+0Xpmjbk=";
     };
     llvmPkgs = llvmPackages_11 // {
       inherit spirv-llvm-translator;
  
positive.code:   # FIXME: How do we run the test suite?
    # https://github.com/intel/intel-graphics-compiler/issues/98
    doCheck = false;
  
    # Handholding the braindead build script
    # cmake requires an absolute path
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "intel-graphics-compiler";
    version = "1.0.11061";
  
    src = fetchFromGitHub {
      owner = "intel";
      repo = "intel-graphics-compiler";
      rev = "igc-${version}";
      sha256 = "sha256-qS/+GTqHtp3T6ggPKrCDsrTb7XvVOUaNbMzGU51jTu4=";
    };
  
    nativeBuildInputs = [ clang cmake bison flex python3 ];
  
    buildInputs = [ spirv-headers spirv-tools clang opencl-clang spirv-llvm-translator llvm lld_11 ];
  
    strictDeps = true;
  
  