anchor.diff:    ];
   
     buildInputs = [
  +    curl
       zstd
  -    curl
     ] ++ lib.optional stdenv.isDarwin argp-standalone;
   
  -  # Darwin needs a patch for argp-standalone usage and differing endian.h location on macOS
  -  # https://github.com/zchunk/zchunk/pull/35
  -  patches = [
  -  (fetchpatch {
  -    name = "darwin-support.patch";
  -    url = "https://github.com/zchunk/zchunk/commit/f7db2ac0a95028a7f82ecb89862426bf53a69232.patch";
  -    sha256 = "0cm84gyii4ly6nsmagk15g9kbfa13rw395nqk3fdcwm0dpixlkh4";
  -  })
  -];
  +  meta = with lib; {
  +    homepage = "https://github.com/zchunk/zchunk";
  +    description = "File format designed for highly efficient deltas while maintaining good compression";
  +    longDescription = ''
  +      zchunk is a compressed file format that splits the file into independent
  +      chunks. This allows you to only download changed chunks when downloading a
  +      new version of the file, and also makes zchunk files efficient over rsync.
   
  -  meta = with lib; {
  -    description = "File format designed for highly efficient deltas while maintaining good compression";
  -    homepage = "https://github.com/zchunk/zchunk";
  +      zchunk files are protected with strong checksums to verify that the file
  +      you downloaded is, in fact, the file you wanted.
  +    '';
       license = licenses.bsd2;
  -    maintainers = with maintainers; [];
  +    maintainers = with maintainers; [ AndersonTorres ];
       platforms = platforms.unix;
     };
   }
  
positive.code: { lib, stdenv
  , fetchFromGitHub
  , fetchpatch
  , pkg-config
  , meson
  , ninja
  , zstd
  , curl
  , argp-standalone
  }:
  
  stdenv.mkDerivation rec {
    pname = "zchunk";
    version = "1.1.8";
  
    outputs = [ "out" "lib" "dev" ];
  
  
negative.code:     owner = "zchunk";
      repo = pname;
      rev = version;
      hash = "sha256-MqnHtqOjLl6R5GZ4f2UX1iLoO9FUT2IfZlSN58wW8JA=";
    };
  
    nativeBuildInputs = [
  