anchor.diff:  { lib
   , buildPythonPackage
  -, isPy27
  +, pythonOlder
   , fetchFromGitHub
   , pytestCheckHook
   }:
  
positive.code:   pname = "certifi";
    version = "2021.10.08";
  
    disabled = isPy27;
  
    src = fetchFromGitHub {
      owner = pname;
  
negative.code:     homepage = "https://github.com/certifi/python-certifi";
      description = "Python package for providing Mozilla's CA Bundle";
      license = licenses.isc;
      maintainers = with maintainers; [ koral SuperSandro2000 ];
    };
  }
  