anchor.diff:    meta = {
       description = "Python XML Binding";
       homepage = "https://github.com/tefra/xsdata";
  +    changelog = "https://github.com/tefra/xsdata/blob/v${version}/CHANGES.rst";
       license = lib.licenses.mit;
       maintainers = with lib.maintainers; [ dotlambda ];
     };
  
positive.code: 
  buildPythonPackage rec {
    pname = "xsdata";
    version = "22.9";
  
    disabled = pythonOlder "3.7";
  
  
negative.code: 
    src = fetchPypi {
      inherit pname version;
      hash = "sha256-3A2vyK6UdelWSzcN7pzPz6xKnU3X+rum7dKzl6OfWoc=";
    };
  
    postPatch = ''
  