anchor.diff:    buildInputs = [ cyrus_sasl gettext openldap ptlib opal libXv rarian intltool
                     perl perlXMLParser evolution_data_server gnome_doc_utils avahi
                     libsigcxx gtk dbus_glib libnotify libXext xextproto sqlite
  -                  gnome3.libsoup
  +                  gnome3.libsoup glib gnome3.gnome_icon_theme_symbolic
                     hicolor_icon_theme gnome3.gnome_icon_theme boost autoreconfHook
                     pkgconfig libxml2 videoproto unixODBC db nspr nss zlib libsecret
                     libXrandr randrproto which libxslt libtasn1 gmp nettle makeWrapper ];
  
positive.code: { stdenv, fetchurl, cyrus_sasl, gettext, openldap, ptlib, opal, libXv, rarian, intltool
  , perl, perlXMLParser, evolution_data_server, gnome_doc_utils, avahi, autoreconfHook
  , libsigcxx, gtk, dbus_glib, libnotify, libXext, xextproto, gnome3, boost, libsecret
  , pkgconfig, libxml2, videoproto, unixODBC, db, nspr, nss, zlib, hicolor_icon_theme
  
negative.code: 
    postInstall = ''
      wrapProgram "$out"/bin/ekiga \
        --prefix XDG_DATA_DIRS : "$XDG_ICON_DIRS:$GSETTINGS_SCHEMAS_PATH"
    '';
  
    meta = with stdenv.lib; {
  