anchor.diff:  buildPythonPackage rec {
     pname = "graphql-subscription-manager";
     version = "0.5.5";
  +  format = "setuptools";
   
     disabled = pythonOlder "3.7";
   
  
positive.code:     owner = "Danielhiversen";
      repo = "PyGraphqlWebsocketManager";
      rev = version;
      sha256 = "sha256-7MqFsttMNnWmmWKj1zaOORBTDGt6Wm8GU7w56DfPl2c=";
    };
  
    propagatedBuildInputs = [
  
negative.code:   # no tests implemented
    doCheck = false;
  
    pythonImportsCheck = [
      "graphql_subscription_manager"
    ];
  
    meta = with lib; {
      description = "Python3 library for graphql subscription manager";
  