faad2: add some key reverse-dependencies to passthru.tests

pkgs/development/libraries/faad2/default.nix

@@ -1,5 +1,14 @@
-{lib, stdenv, fetchFromGitHub, autoreconfHook
+{lib
+, stdenv
+, fetchFromGitHub
+, autoreconfHook
 , drmSupport ? false # Digital Radio Mondiale
+
+# for passthru.tests
+, gst_all_1
+, mpd
+, ocamlPackages
+, vlc
 }:
 
 with lib;
@@ -19,6 +28,12 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook ];
 
+  passthru.tests = {
+    inherit mpd vlc;
+    inherit (gst_all_1) gst-plugins-bad;
+    ocaml-faad = ocamlPackages.faad;
+  };
+
   meta = {
     description = "An open source MPEG-4 and MPEG-2 AAC decoder";
     homepage = "https://sourceforge.net/projects/faac/";