anchor.diff:      "LD_LIBRARY_PATH=${cudaStub}\${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH ";
   
   in buildPythonPackage rec {
  -  version = "1.4.1";
  +  version = "1.5.0";
     pname = "pytorch";
     disabled = !isPy3k;
   
  
positive.code:     repo   = "pytorch";
      rev    = "v${version}";
      fetchSubmodules = true;
      sha256 = "1aa1il4f98pswfj20cv27yfb91l1jcq4515i7mvq7sh5647yzwms";
    };
  
    preConfigure = lib.optionalString cudaSupport ''
  
negative.code:   '' + lib.optionalString (cudaSupport && cudnn != null) ''
      export CUDNN_INCLUDE_DIR=${cudnn}/include
    '';
  
    # Use pytorch's custom configurations
    dontUseCmakeConfigure = true;
  