anchor.diff:  { stdenv, makeWrapper, fetchurl, dpkg
   , alsaLib, atk, cairo, cups, dbus, expat, fontconfig, freetype
   , gdk-pixbuf, glib, gnome2, pango, nspr, nss, gtk3
  -, xorg, autoPatchelfHook, systemd, libnotify
  +, xorg, autoPatchelfHook, systemd, libnotify, libappindicator
   }:
   
   let deps = [
  
positive.code:     gnome2.GConf
      pango
      gtk3
      libnotify
      xorg.libX11
      xorg.libXScrnSaver
  
negative.code: 
    unpackPhase = "dpkg-deb -x $src .";
  
    runtimeDependencies = [ systemd.lib libnotify libappindicator ];
  
    installPhase = ''
      runHook preInstall
  