anchor.diff:  , attrs
   , buildPythonPackage
   , fetchFromGitHub
  -, fetchpatch
   , exceptiongroup
   , hypothesis
   , immutables
  
positive.code: 
  buildPythonPackage rec {
    pname = "cattrs";
    version = "22.1.0";
    format = "pyproject";
  
    disabled = pythonOlder "3.7";
  
negative.code:     owner = "python-attrs";
      repo = pname;
      rev = "v${version}";
      hash = "sha256-Qnrq/mIA/t0mur6IAen4vTmMIhILWS6v5nuf+Via2hA=";
    };
  
    nativeBuildInputs = [
      poetry-core
  