anchor.diff: -{ stdenv, fetchurl, pkgconfig, gtk, gtkspell, aspell
  -, gstreamer, gst_plugins_base, startupnotification, gettext
  +{ stdenv, fetchurl, makeWrapper, pkgconfig, gtk, gtkspell, aspell
  +, gstreamer, gst_plugins_base, gst_plugins_good, startupnotification, gettext
   , perl, perlXMLParser, libxml2, nss, nspr, farsight2
   , libXScrnSaver, ncurses, avahi, dbus, dbus_glib, intltool, libidn
   , lib, python, libICE, libXext, libSM
  
positive.code: 
    inherit nss ncurses;
  
    buildInputs = [
      gtkspell aspell
      gstreamer gst_plugins_base startupnotification
      libxml2 nss nspr farsight2
      libXScrnSaver ncurses python
      avahi dbus dbus_glib intltool libidn
  
negative.code: 
    enableParallelBuilding = true;
  
    postInstall = ''
      wrapProgram $out/bin/pidgin \
        --prefix GST_PLUGIN_SYSTEM_PATH : "$GST_PLUGIN_SYSTEM_PATH"
    '';
  
    meta = with stdenv.lib; {
      description = "Multi-protocol instant messaging client";
      homepage = http://pidgin.im;
  