anchor.diff:      owner = "nodejs";
       repo = "http-parser";
       rev = "v${version}";
  -    sha256 = "189zi61vczqgmqjd2myjcjbbi5icrk7ccs0kn6nj8hxqiv5j3811";
  +    sha256 = "1vda4dp75pjf5fcph73sy0ifm3xrssrmf927qd1x8g3q46z0cv6c";
     };
   
     NIX_CFLAGS_COMPILE = "-Wno-error";
  
positive.code: 
    meta = with stdenv.lib; {
      description = "An HTTP message parser written in C";
      homepage = https://github.com/nodejs/http-parser;
      maintainers = with maintainers; [ matthewbauer ];
      license = licenses.mit;
      platforms = platforms.unix;
  
negative.code: { stdenv, fetchFromGitHub }:
  
  let
    version = "2.9.4";
  in stdenv.mkDerivation {
    pname = "http-parser";
    inherit version;
  