anchor.diff:        "A Concrete Syntax Tree (CST) parser and serializer library for Python.";
       homepage = "https://github.com/Instagram/libcst";
       license = with licenses; [ mit asl20 psfl ];
  -    maintainers = with maintainers; [ maintainers.ruuda ];
  +    maintainers = with maintainers; [ ruuda SuperSandro2000 ];
     };
   }
  
positive.code:     owner = "instagram";
      repo = pname;
      rev = "v${version}";
      sha256 = "0pbddjrsqj641mr6zijk2phfn15dampbx268zcws4bhhhnrxlj65";
    };
  
    disabled = pythonOlder "3.6";
  
    propagatedBuildInputs = [ pyyaml typing-inspect ]
      ++ lib.optional (pythonOlder "3.7") dataclasses;
  
    checkInputs = [ black isort pytestCheckHook ];
  
    # https://github.com/Instagram/LibCST/issues/346
    # https://github.com/Instagram/LibCST/issues/347
    preCheck = ''
      python -m libcst.codegen.generate visitors
      python -m libcst.codegen.generate return_types
      rm libcst/tests/test_fuzz.py
      rm libcst/tests/test_pyre_integration.py
      rm libcst/metadata/tests/test_full_repo_manager.py
      rm libcst/metadata/tests/test_type_inference_provider.py
    '';
  
    pythonImportsCheck = [ "libcst" ];
  
negative.code: { lib
  , buildPythonPackage
  , fetchFromGitHub
  , pythonOlder
  , hypothesis
  , doCheck ? true
  , dataclasses
  , hypothesmith
  , pytestCheckHook
  , pyyaml
  , typing-extensions
  , typing-inspect
  , black
  , isort
  }:
  
  buildPythonPackage rec {
    pname = "libcst";
    version = "0.3.17";
  
    # Some files for tests missing from PyPi
    # https://github.com/Instagram/LibCST/issues/331
  