anchor.diff:      runHook postInstall
     '';
   
  -  enableParallelBuilding = true;
  -
  -  meta = {
  +  meta = with lib; {
       description = "Intel Thread Building Blocks C++ Library";
       homepage = "http://threadingbuildingblocks.org/";
       license = licenses.asl20;
  
positive.code:       represents a higher-level, task-based parallelism that abstracts platform
        details and threading mechanisms for scalability and performance.
      '';
      platforms = with platforms; linux ++ darwin;
      maintainers = with maintainers; [ thoughtpolice dizfer ];
    };
  }
  
negative.code: { lib
  , stdenv
  , fetchFromGitHub
  , fixDarwinDylibNames
  }:
  
  stdenv.mkDerivation rec {
    pname = "tbb";
    version = "2020.3";
  
    src = fetchFromGitHub {
      owner = "oneapi-src";
      repo = "oneTBB";
      rev = "v${version}";
      sha256 = "prO2O5hd+Wz5iA0vfrqmyHFr0Ptzk64so5KpSpvuKmU=";
    };
  
    patches = lib.optionals stdenv.hostPlatform.isMusl [
      ./glibc-struct-mallinfo.patch
    ];
  
    nativeBuildInputs = lib.optionals stdenv.isDarwin [
      fixDarwinDylibNames
    ];
  
    makeFlags = lib.optionals stdenv.cc.isClang [
      "compiler=clang"
    ];
  
    enableParallelBuilding = true;
  
    installPhase = ''
      runHook preInstall
  