anchor.diff:      alsaLib
       atk
       at-spi2-atk
  +    at-spi2-core
       cairo
       cups
       curl
  
positive.code: { stdenv, fetchurl, dpkg
  , alsaLib, atk, cairo, cups, curl, dbus, expat, fontconfig, freetype, gdk-pixbuf, glib, glibc, gnome2, gnome3
  , gtk3, libnotify, libpulseaudio, libsecret, libv4l, nspr, nss, pango, systemd, wrapGAppsHook, xorg
  , at-spi2-atk }:
  
  let
  
  
negative.code:     glib
      glibc
      libsecret
      libuuid
  
      gnome2.GConf
      gdk-pixbuf
  