anchor.diff:      owner = "hughsie";
       repo = "appstream-glib";
       rev = stdenv.lib.replaceStrings [ "." "-" ] [ "_" "_" ] name;
  -    sha256 = "05x2pmsq18fcpgfvx0y54qdlryy5c9k3sxk6kgank8frkzhgnm9r";
  +    sha256 = "06pm8l58y0ladimyckbvlslr5bjj9rwb70rgjmn09l41pdpipy2i";
     };
   
     nativeBuildInputs = [
  
positive.code: , pngquant
  }:
  stdenv.mkDerivation rec {
    name = "appstream-glib-0.7.16";
  
    outputs = [ "out" "dev" "man" "installedTests" ];
    outputBin = "dev";
  
negative.code: 
    meta = with stdenv.lib; {
      description = "Objects and helper methods to read and write AppStream metadata";
      homepage = "https://people.freedesktop.org/~hughsient/appstream-glib/";
      license = licenses.lgpl2Plus;
      platforms = platforms.unix;
      maintainers = with maintainers; [ lethalman matthewbauer ];
  