anchor.diff:    enableParallelBuilding = true;
   
     meta = {
  +    description = "Intel Thread Building Blocks C++ Library";
       homepage = "http://threadingbuildingblocks.org/";
  -    description = "Intel Thread Building Blocks C++ Library";
       license = "LGPLv3+";
  -
       longDescription = ''
         Intel Threading Building Blocks offers a rich and complete approach to
         expressing parallelism in a C++ program. It is a library that helps you
  
positive.code: { stdenv, fetchurl }:
  
  stdenv.mkDerivation {
    name = "tbb-4.0-u5";
  
    src = fetchurl {
      url = "http://threadingbuildingblocks.org/uploads/77/187/4.0%20update%205/tbb40_20120613oss_src.tgz";
      sha256 = "aaa98146049e55f6ac969298340eeb49df61395403fcc1480824a4ecd0d46192";
    };
  
    checkTarget = "test";
  
negative.code:       represents a higher-level, task-based parallelism that abstracts platform
        details and threading mechanisms for scalability and performance.
      '';
      platforms = stdenv.lib.platforms.linux;
      maintainers = with stdenv.lib.maintainers; [ simons thoughtpolice ];
    };
  }
  