anchor.diff:  , pythonOlder
   , cookiecutter
   , filelock
  +, huggingface-hub
   , importlib-metadata
   , regex
   , requests
   , numpy
   , packaging
   , protobuf
  +, pyyaml
   , sacremoses
   , tokenizers
   , tqdm
  
positive.code: 
  buildPythonPackage rec {
    pname = "transformers";
    version = "4.4.2";
  
    src = fetchFromGitHub {
      owner = "huggingface";
      repo = pname;
      rev = "v${version}";
      hash = "sha256-kl1Z2FBo+yqVXUqLaUtet6IycmdcAtfydNTI4MNNrkc=";
    };
  
    nativeBuildInputs = [ packaging ];
  
negative.code:   propagatedBuildInputs = [
      cookiecutter
      filelock
      huggingface-hub
      numpy
      protobuf
      pyyaml
      regex
      requests
      sacremoses
  