anchor.diff:      inherit pname version;
       sha256 = "sha256-J/UDIg5oRdnblU+yErlbA2LYt+bBsjJqhwYcPek1lLE=";
     };
  +
  +  nativeBuildInputs = [
  +    poetry-core
  +  ];
   
     checkInputs = [
       hypothesis
  
positive.code: , buildPythonPackage
  , fetchPypi
  , hypothesis
  , pytestCheckHook
  , pytz
  , pythonOlder
  
negative.code: buildPythonPackage rec {
    pname = "iso8601";
    version = "1.0.2";
    format = "pyproject";
  
    disabled = pythonOlder "3.6";
  
  