anchor.diff:      libxkbcommon
     ];
   
  -  preFixup = ''
  -    wrapProgram "$out/bin/mutter" \
  -      --prefix XDG_DATA_DIRS : "$GSETTINGS_SCHEMAS_PATH"
  -  '';
  -
     enableParallelBuilding = true;
   
     meta = with stdenv.lib; {
  
positive.code: { fetchFromGitLab, stdenv, substituteAll, pkgconfig, gnome3, intltool, gobject-introspection, upower, cairo
  , glib, gtk3, pango, cogl, clutter, libstartup_notification, zenity, libcanberra-gtk3
  , gsettings-desktop-schemas, gnome-desktop
  , libtool, makeWrapper, xkeyboard_config, libxkbfile, libxkbcommon, libXtst, libinput
  , geocode-glib, libgudev, libwacom, xwayland, autoreconfHook }:
  
  
negative.code:     libXtst
    ];
  
    nativeBuildInputs = [ autoreconfHook pkgconfig intltool libtool wrapGAppsHook ];
  
    buildInputs = [
      glib gobject-introspection gtk3 gsettings-desktop-schemas upower
  