anchor.diff:  
   buildPythonPackage rec {
     pname = "google-api-core";
  -  version = "1.30.0";
  +  version = "2.0.0";
   
     src = fetchPypi {
       inherit pname version;
  -    sha256 = "0724d354d394b3d763bc10dfee05807813c5210f0bd9b8e2ddf6b6925603411c";
  +    sha256 = "sha256-vZ6wcJ9OEN1v3bMv0HiKGQtDRCbCWL5uAO9A2hNtdo0=";
     };
   
     propagatedBuildInputs = [
  
positive.code:     google-auth
      grpcio
      protobuf
      pytz
      requests
    ];
  
  
negative.code: , googleapis-common-protos
  , grpcio
  , protobuf
  , proto-plus
  , requests
  , mock
  , pytest
  