anchor.diff:    '';
   
     preFixup = with gnome3; ''
  -    wrapProgram $out/bin/gnome-control-center \
  -      --set GDK_PIXBUF_MODULE_FILE "$GDK_PIXBUF_MODULE_FILE" \
  -      --prefix XDG_DATA_DIRS : "${gnome3.gnome_themes_standard}/share:${sound-theme-freedesktop}/share:$out/share:$out/share/gnome-control-center:$XDG_ICON_DIRS:$GSETTINGS_SCHEMAS_PATH"
       for i in $out/share/applications/*; do
         substituteInPlace $i --replace "gnome-control-center" "$out/bin/gnome-control-center"
       done
  
positive.code: { fetchurl, stdenv, pkgconfig, gnome3, ibus, intltool, upower, makeWrapper
  , libcanberra_gtk2, libcanberra_gtk3, accountsservice, libpwquality, libpulseaudio
  , gdk_pixbuf, librsvg, libxkbfile, libnotify, libgudev
  , libxml2, polkit, libxslt, libgtop, libsoup, colord, colord-gtk
  
negative.code:   enableParallelBuilding = false;
  
    buildInputs = with gnome3;
      [ pkgconfig intltool ibus gtk glib glib_networking upower libcanberra_gtk2 gsettings_desktop_schemas
        libxml2 gnome_desktop gnome_settings_daemon polkit libxslt libgtop gnome-menus
        gnome_online_accounts libsoup colord libpulseaudio fontconfig colord-gtk libpwquality
        accountsservice libkrb5 networkmanagerapplet libwacom samba libnotify libxkbfile
        shared_mime_info icu libtool docbook_xsl docbook_xsl_ns gnome3.grilo
        gdk_pixbuf gnome3.defaultIconTheme librsvg clutter clutter_gtk
        gnome3.vino udev libcanberra_gtk3 libgudev wrapGAppsHook
        networkmanager modemmanager makeWrapper gnome3.gnome-bluetooth grilo tracker
        cracklib ];
  
  