anchor.diff:      rm -r $out/bin   # ctest runner
     '';
   
  +  enableParallelBuilding = true;
  +
     meta = with stdenv.lib; {
       description = "Cross-platform, high performance scoring engine for ML models";
       longDescription = ''
  
positive.code:       compatibility.
      '';
      homepage = "https://github.com/microsoft/onnxruntime";
      license = licenses.mit;
      maintainers = with maintainers; [ jonringer ];
    };
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "onnxruntime";
    version = "1.0.0";
  
    src = fetchFromGitHub {
      owner = "microsoft";
      repo = "onnxruntime";
      rev = "v${version}";
      sha256 = "1d28lzrjnq69yl8j9ncxlsxl0bniacn3hnsr9van10zgp527436v";
      # TODO: use nix-versions of grpc, onnx, eigen, googletest, etc.
      # submodules increase src size and compile times significantly
      # not currently feasible due to how integrated cmake build is with git
  