anchor.diff:      gconf
       gdk-pixbuf
       glib
  -    gtk_2
  +    gtk_3
       libnotify
       libx11
       libxcb
  
positive.code: , pulseaudio_lib
  , shared-mime-info
  , systemd_lib
  
  , channel ? "stable"
  }:
  
negative.code: 
    libPath = makeSearchPath "lib" [
      alsa-lib
      at-spi2-atk
      atk
      cairo
      cups
  