anchor.diff:    version = "2.12.0";
     format = "setuptools";
   
  +  disabled = pythonOlder "3.6";
  +
     src = fetchPypi {
       inherit pname version;
  -    sha256 = "sha256-5RoIpyVm/y2+6pN4mJPWHbVUwxH6yWI/vIuCVNJU2aw=";
  +    hash = "sha256-5RoIpyVm/y2+6pN4mJPWHbVUwxH6yWI/vIuCVNJU2aw=";
     };
   
     propagatedBuildInputs = [
  
positive.code:     "tests/unit/pubsub_v1"
    ];
  
    pythonImportsCheck = [ "google.cloud.pubsub" ];
  
    meta = with lib; {
      description = "Google Cloud Pub/Sub API client library";
  
negative.code: , mock
  , proto-plus
  , pytest-asyncio
  , pythonOlder
  }:
  
  buildPythonPackage rec {
  