anchor.diff:       substituteInPlace configure --replace "-Werror" ""
     '';
   
  -  configureFlags = [ "--with-systemdsystemunitdir=$(out)/etc/systemd/system" ] ++
  +  configureFlags = [ "--with-systemdsystemunitdir=$(out)/etc/systemd/system" "--enable-introspection" ] ++
                      optionals stdenv.isDarwin [
                          "--disable-silent-rules"
                          "--disable-3g-source"
  
positive.code:   outputs = [ "out" "dev" ];
  
    nativeBuildInputs = [
      pkgconfig intltool wrapGAppsHook
    ];
  
    buildInputs = libintlOrEmpty ++
  
negative.code: { fetchurl, stdenv, intltool, libintlOrEmpty, pkgconfig, glib, json-glib, libsoup, geoip
  , dbus, dbus-glib, modemmanager, avahi, glib-networking, wrapGAppsHook, gobjectIntrospection
  }:
  
  with stdenv.lib;
  