anchor.diff:  
   buildPythonPackage rec {
     pname = "pydash";
  -  version = "5.1.0";
  -  format = "setuptools";
  +  version = "5.1.1";
  +  format = "pyproject";
   
     disabled = pythonOlder "3.6";
   
  
positive.code:     owner = "dgilland";
      repo = pname;
      rev = "v${version}";
      hash = "sha256-BAyiSnILvujUOFOAkiXSgyozs2Q809pYihHwa+6BHcQ=";
    };
  
    checkInputs = [
  
negative.code:   ];
  
    meta = with lib; {
      description = "Python utility libraries for doing stuff in a functional way";
      homepage = "https://pydash.readthedocs.io";
      license = licenses.mit;
  