anchor.diff:      sha256 = "sha256-z0y4z+/JE6rZWHAvps/taDZvutyVhxxs2gMujV5rNu4=";
     };
   
  -  checkInputs = [ pytest ];
  +  checkInputs = [ pytestCheckHook ];
   
     propagatedBuildInputs = [ six ]
       ++ lib.optionals (pythonOlder "3.4") [ enum34 pathlib ];
  
positive.code: { lib
  , buildPythonPackage
  , fetchFromGitHub
  , pytest
  , six
  , enum34
  , pathlib
  
negative.code:   # Test suite is broken.
    # See https://github.com/Kronuz/pyScss/issues/415
    doCheck = false;
  
    meta = with lib; {
      description = "A Scss compiler for Python";
      homepage = "https://pyscss.readthedocs.org/en/latest/";
      license = licenses.mit;
      maintainers = with maintainers; [ ];
    };
  }
  