anchor.diff:  
         wrapProgram $out/bin/mutter \
           --set 'GI_TYPELIB_PATH' "$GI_TYPELIB_PATH" \
  +        --set 'GSETTINGS_BACKEND' 'dconf' \
  +        --prefix 'GIO_EXTRA_MODULES' : "$GIO_EXTRA_MODULES" \
  +        --prefix 'XDG_DATA_DIRS' : "$GSETTINGS_SCHEMAS_PATH" \
           --prefix 'XDG_DATA_DIRS' : "$out/share" \
  -        --prefix 'XDG_DATA_DIRS' : "$GSETTINGS_SCHEMAS_PATH"
  +        --prefix 'XDG_DATA_DIRS' : "$XDG_ICON_DIRS"
       '';
   
     meta = with stdenv.lib; {
  
positive.code:     cairo
      clutter
      cogl
      gdk-pixbuf
      geocode-glib
      glib
      gnome-desktop
      gobject-introspection
      gsettings-desktop-schemas
      gtk3
  
negative.code: , gettext
  , intltool
  , libtool
  , makeWrapper
  
  , atk
  , dconf
  , gdk-pixbuf
  , geocode-glib
  , glib
  , gnome-desktop
  , gnome-settings-daemon
  , gobject-introspection
  , gsettings-desktop-schemas
  , json-glib
  