anchor.diff:      "https://github.com/tatsuhiro-t/nghttp2/releases/download/v${version}/nghttp2-${version}.tar.xz"
     ];
   
  -  version = "1.33.0";
  +  version = "1.34.0";
   in
   stdenv.mkDerivation rec {
     name = "${prefix}nghttp2-${version}";
  
positive.code:   src = fetchurl {
      urls = tarballUrls version;
      hashOutput = false;
      sha256 = "4879ce9ff3320f5344b910ee1c46ed5e366edc2272620cf17d8e762724d7df1e";
    };
  
    buildInputs = optionals (!isLib) [
  
negative.code:   passthru = {
      srcVerification = fetchurl {
        failEarly = true;
        url = tarballUrls "1.34.0";
        outputHash = "ecb0c013141495e24bd6deca022b5a92097a7848a0c17c4e5af1243a97fa622e";
        inherit (src)
          outputHashAlgo;
        fullOpts = { };
  