anchor.diff:  }:
   stdenv.mkDerivation rec {
     pname = "appstream-glib";
  -  version = "0.7.18";
  +  version = "0.8.1";
   
     outputs = [ "out" "dev" "man" "installedTests" ];
     outputBin = "dev";
  
positive.code: , gtk3
  , json-glib
  , libarchive
  , libsoup
  , libuuid
  , libxslt
  , meson
  
negative.code:     owner = "hughsie";
      repo = "appstream-glib";
      rev = "${lib.replaceStrings ["-"] ["_"] pname}_${lib.replaceStrings ["."] ["_"] version}";
      sha256 = "Qf0z9YTfjTiEr9OlK2BgOpVDtM2ozsiyjzO04O81zas=";
    };
  
    nativeBuildInputs = [
  