anchor.diff:  { stdenv, requireFile, makeWrapper, autoPatchelfHook, wrapGAppsHook, which, more
   , file, atk, alsaLib, cairo, fontconfig, gdk-pixbuf, glib, gnome3, gtk2-x11, gtk3
  -, heimdal, krb5, libsoup, libvorbis, speex, openssl, zlib, xorg, pango, gtk2, gstreamer
  -, gst-plugins-base, gnome2, nss, nspr, gtk_engines, freetype, dconf, libpng12, libxml2
  +, heimdal, krb5, libsoup, libvorbis, speex, openssl, zlib, xorg, pango, gtk2
  +, gnome2, nss, nspr, gtk_engines, freetype, dconf, libpng12, libxml2
   , libjpeg, libredirect, tzdata, cacert, systemd, libcxxabi, libcxx, e2fsprogs, symlinkJoin
   
   , homepage, version, prefix, hash
  
positive.code:     gdk-pixbuf
      gnome2.gtkglext
      gnome3.webkitgtk
      gst-plugins-base
      gstreamer
      gtk2
      gtk2-x11
      gtk3
  
negative.code:     rm $out/opt/citrix-icaclient/lib/ctxjpeg_fb_8.so
      rm $out/opt/citrix-icaclient/lib/UIDialogLibWebKit.so
  
      # We support only Gstreamer 1.0
      rm $ICAInstDir/util/{gst_aud_{play,read},gst_*0.10,libgstflatstm0.10.so}
      ln -sf $ICAInstDir/util/gst_play1.0 $ICAInstDir/util/gst_play
      ln -sf $ICAInstDir/util/gst_read1.0 $ICAInstDir/util/gst_read
  
      echo "We arbitrarily set the timezone to UTC. No known consequences at this point."
      echo UTC > "$ICAInstDir/timezone"
  
  