anchor.diff:  , gtk3
   , libvirt
   , spice-gtk
  -, python3
   , appstream-glib
   , spice-protocol
   , libhandy
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "gnome-boxes";
    version = "43.beta";
  
    src = fetchurl {
      url = "mirror://gnome/sources/${pname}/${lib.versions.major version}/${pname}-${version}.tar.xz";
      sha256 = "WqNgpIepZCy/qJLNVFlgCXCRLT6FjyCKJDlz0Jev7Ts=";
    };
  
    patches = [
  
negative.code:     gappsWrapperArgs+=(--prefix PATH : "${lib.makeBinPath [ mtools cdrkit libcdio qemu-utils ]}")
    '';
  
    passthru = {
      updateScript = gnome.updateScript {
        packageName = pname;
  