anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "gnome-boxes";
  -  version = "3.36.6";
  +  version = "3.38.0";
   
     src = fetchurl {
       url = "mirror://gnome/sources/${pname}/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
  -    sha256 = "0c3cw90xqqcpacc2z06ljs0gg8saxizfgjzg9alhpwgz3gl4c5pg";
  +    sha256 = "12x38780j52bv46q2i6468va1zww28mmy83rasbl3y8sqagmjsv9";
     };
   
     doCheck = true;
   
     nativeBuildInputs = [
  +    appstream-glib # for appstream-util
       desktop-file-utils
       gettext
       gobject-introspection
  
positive.code:     spice-gtk
      spice-protocol
      systemd
      tracker
      tracker-miners
      vte
      webkitgtk
      xen
  
negative.code: , gobject-introspection
  , libxml2
  , gtk3
  , gtksourceview4
  , gtk-vnc
  , freerdp
  , libvirt
  , spice-gtk
  , python3
  , appstream-glib
  , spice-protocol
  , libhandy_0
  , libsoup
  , libosinfo
  , systemd
  , tracker_2
  , tracker-miners-2
  , vala
  , libcap
  , yajl
  