anchor.diff:  { stdenv, fetchurl, pkgconfig, vala, glib, libxslt, gtk, wrapGAppsHook
   , webkitgtk, json_glib, rest, libsecret, dbus_glib, gnome_common, gtk_doc
   , telepathy_glib, intltool, dbus_libs, icu, glib_networking
  -, libsoup, docbook_xsl_ns, docbook_xsl, gnome3
  +, libsoup, docbook_xsl_ns, docbook_xsl, gnome3, gcr, kerberos
   }:
   
   stdenv.mkDerivation rec {
  
positive.code:   ];
    buildInputs = [
      glib gtk webkitgtk json_glib rest libsecret dbus_glib telepathy_glib glib_networking icu libsoup
    ];
  
    meta = with stdenv.lib; {
  
negative.code:   outputs = [ "out" "man" "dev" "devdoc" ];
  
    configureFlags = [
      "--enable-media-server"
      "--enable-kerberos"
      "--enable-lastfm"
      "--enable-todoist"
      "--enable-gtk-doc"
    ];
  
  