anchor.diff:  
     buildInputs = with gnome3;
       [ gsettings_desktop_schemas gnome_keyring gnome-menus glib gcr json_glib accountsservice
  -      libcroco intltool libsecret pkgconfig python3 libsoup polkit libcanberra gdk_pixbuf librsvg
  +      libcroco intltool libsecret pkgconfig python3 python3Packages.pygobject3
  +      libsoup polkit libcanberra gdk_pixbuf librsvg
         clutter networkmanager libstartup_notification telepathy_glib docbook_xsl docbook_xsl_ns
         libXtst p11_kit networkmanagerapplet gjs mutter libpulseaudio caribou evolution_data_server
         libical libtool nss gobjectIntrospection gtk gstreamer makeWrapper gdm
  
positive.code:       --prefix XDG_DATA_DIRS : "${gnome_themes_standard}/share:$out/share:$XDG_ICON_DIRS" \
        --suffix XDG_DATA_DIRS : "$GSETTINGS_SCHEMAS_PATH"
  
      wrapProgram "$out/libexec/gnome-shell-calendar-server" \
        --prefix XDG_DATA_DIRS : "${evolution_data_server}/share:$out/share:$XDG_ICON_DIRS:$GSETTINGS_SCHEMAS_PATH"
  
  
negative.code: { fetchurl, stdenv, pkgconfig, gnome3, json_glib, libcroco, intltool, libsecret
  , python3, python3Packages, libsoup, polkit, clutter, networkmanager
  , docbook_xsl , docbook_xsl_ns, at_spi2_core, libstartup_notification
  , telepathy_glib, telepathy_logger, libXtst, p11_kit, unzip, sqlite, libgweather
  , libcanberra_gtk3 , libpulseaudio, libical, libtool, nss, gobjectIntrospection
  , gstreamer, makeWrapper , accountsservice, gdk_pixbuf, gdm, upower, ibus
  , networkmanagerapplet, librsvg }:
  
  # http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/gnome-base/gnome-shell/gnome-shell-3.10.2.1.ebuild?revision=1.3&view=markup
  
  