gajim: Enable SRV support using drill from ldns.

Use a patch from Arch Linux to use drill instead of nslookup. The primary reason
for this is because nslookup is in bind, and we don't want to depend on the
whole bind package just for the sake of supporting SRV lookups.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>

pkgs/applications/networking/instant-messengers/gajim/default.nix

@@ -1,5 +1,5 @@
 { stdenv, fetchurl, python, intltool, pkgconfig, libX11, gtk
-, pyopenssl, pythonDBus, pythonPackages
+, ldns, pyopenssl, pythonDBus, pythonPackages
 
 , enableJingle ? true, farstream ? null, gst_plugins_bad ? null
 ,                      libnice ? null
@@ -25,11 +25,19 @@ stdenv.mkDerivation rec {
     sha256 = "1g4m5j777vqqdwqvr2m6l09ljjx65ilag45d5kfc78z7frm0cz7g";
   };
 
-  patches = singleton (fetchurl {
-    name = "gajim-icon-index.patch";
-    url = "http://hg.gajim.org/gajim/raw-rev/b9ec78663dfb";
-    sha256 = "0w54hr5dq9y36val55kmh8d6cid7h4fs2nghx09714jylz2nyxxv";
-  });
+  patches = [
+    (fetchurl {
+      name = "gajim-drill-srv.patch";
+      url = "https://projects.archlinux.org/svntogit/packages.git/"
+          + "plain/trunk/gajim-drill.patch?h=packages/gajim";
+      sha256 = "1k8zz3ns0l0kriffq41jgkv5ym6jvyd24171l7s98v9d81prdw1w";
+    })
+    (fetchurl {
+      name = "gajim-icon-index.patch";
+      url = "http://hg.gajim.org/gajim/raw-rev/b9ec78663dfb";
+      sha256 = "0w54hr5dq9y36val55kmh8d6cid7h4fs2nghx09714jylz2nyxxv";
+    })
+  ];
 
   postPatch = ''
     sed -i -e '0,/^[^#]/ {