anchor.diff:      owner = "grpc";
       repo = "grpc";
       rev = "v${version}";
  -    sha256 = "81ac28b5b69bbecffc58e7eb529f77125763ee8b6a71fcf85bbf0ac8a7ea394d";
  +    sha256 = "10447120a6bd14b4bed93ef30251b2ae59ea2f89c38c4b1c274bf1a7e9f619c0";
     };
   
     nativeBuildInputs = [
  
positive.code: }:
  
  let
    version = "1.14.0";
  in
  stdenv.mkDerivation {
    name = "grpc-${version}";
  
negative.code:     unpackFile ${protobuf-cpp.src}
      mv -v protobuf* third_party/protobuf
  
      grep -q '\-Werror' Makefile
      sed -i 's, -Werror,,g' Makefile
    '';
  
  