anchor.diff:  
   stdenv.mkDerivation rec {
     name = "coreclr-${version}";
  -  version = "2.0.0";
  +  version = "2.0.7";
   
     src = fetchFromGitHub {
       owner  = "dotnet";
       repo   = "coreclr";
       rev    = "v${version}";
  -    sha256 = "16z58ix8kmk8csfy5qsqz8z30czhrap2vb8s8vdflmbcfnq31jcw";
  +    sha256 = "0pzkrfgqywhpijbx7j1v4lxa6270h6whymb64jdkp7yj56ipqh2n";
     };
   
     patches = [
  
positive.code: 
    buildPhase = ''
      runHook preBuild
      ./build.sh $BuildArch $BuildType
      runHook postBuild
    '';
  
  
negative.code:       url = https://github.com/dotnet/coreclr/commit/a8f83b615708c529b112898e7d2fbc3f618b26ee.patch;
        sha256 = "047ph5gip4z2h7liwdxsmpnlaq0sd3hliaw4nyqjp647m80g3ffq";
      })
      (fetchpatch {
        # clang 5
        url = https://github.com/dotnet/coreclr/commit/9b22e1a767dee38f351001c5601f56d78766a43e.patch;
        sha256 = "1w1lxw5ryvhq8m5m0kv880c4bh6y9xdgypkr76sqbh3v568yghzg";
      })
    ];
  
    nativeBuildInputs = [
      which
      cmake
      clang
    ];
  
    buildInputs = [
      llvmPackages.llvm
      llvmPackages.lldb
      libunwind
  