byzanz: Let it find gstreamer plugins

pkgs/applications/video/byzanz/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchgit, which, gnome3, glib, intltool, pkgconfig, libtool, cairo, gtk3, gst_all_1 }:
+{ stdenv, fetchgit, wrapGAppsHook, which, gnome3, glib, intltool, pkgconfig, libtool, cairo, gtk3, gst_all_1, xorg }:
 
 stdenv.mkDerivation rec {
   version = "0.2.3.alpha";
@@ -18,7 +18,8 @@ stdenv.mkDerivation rec {
 
   NIX_CFLAGS_COMPILE = "-Wno-error=deprecated-declarations";
 
-  buildInputs = [ which gnome3.gnome_common glib intltool pkgconfig libtool cairo gtk3 gst_all_1.gstreamer gst_all_1.gst-plugins-base ];
+  buildInputs = [ which gnome3.gnome_common glib intltool pkgconfig libtool cairo gtk3 xorg.xwininfo ]
+  ++ (with gst_all_1; [ gstreamer gst-plugins-base gst-plugins-bad gst-plugins-good gst-plugins-ugly gst-libav wrapGAppsHook ]);
 
   meta = with stdenv.lib; {
     description = "Tool to record a running X desktop to an animation suitable for presentation in a web browser";