anchor.diff:  
   let
     pname = "vector";
  -  version = "0.20.0";
  +  version = "0.20.1";
   in
   rustPlatform.buildRustPackage {
     inherit pname version;
  
positive.code:     owner = "timberio";
      repo = pname;
      rev = "v${version}";
      sha256 = "sha256-OkT1Gj66Z4sj3YtaMlU1lbquTECPG34qydXGbx24Ig4=";
    };
  
    cargoSha256 = "sha256-O2uy0wK4pdwjAYzIKJnCzJVsA3n+U+dw731y7OPJfP0=";
    nativeBuildInputs = [ pkg-config cmake ];
    buildInputs = [ oniguruma openssl protobuf rdkafka zstd ]
      ++ lib.optionals stdenv.isDarwin [ Security libiconv coreutils CoreServices ];
  
  
negative.code: , CoreServices
  , tzdata
  , cmake
  , perl
    # kafka is optional but one of the most used features
  , enableKafka ? true
    # TODO investigate adding "api" "api-client" "vrl-cli" and various "vendor-*"
  