anchor.diff:  { lib
   , fetchPypi
  +, fetchpatch
   , buildPythonPackage
   , flask
   , itsdangerous
  
positive.code:     sha256 = "34fe5c6fee0f69b50e30f81a3b7ea16aa1492a771fe9ad0974d164610c09a6c9";
    };
  
    propagatedBuildInputs = [
      flask
      itsdangerous
  
negative.code:   meta = with lib; {
      description = "Simple integration of Flask and WTForms.";
      license = licenses.bsd3;
      maintainers = with maintainers; [ mic92 ];
      homepage = "https://github.com/lepture/flask-wtf/";
    };
  }
  