Adding pygobject3 (for bluez4).

bluez-simple-agent fails to work otherwise.
We discussed this a bit on #486, and this looks like the simplest way to
get bluez-simple-agent again.

pkgs/development/python-modules/pygobject/3.nix

@@ -0,0 +1,19 @@
+{ stdenv, fetchurl, python, pkgconfig, glib, gobjectIntrospection, pycairo, cairo }:
+ 
+stdenv.mkDerivation rec {
+  name = "pygobject-3.0.4";
+   
+  src = fetchurl {
+    url = "http://ftp.gnome.org/pub/GNOME/sources/pygobject/3.0/${name}.tar.xz";
+    sha256 = "f457b1d7f6b8bfa727593c3696d2b405da66b4a8d34cd7d3362ebda1221f0661";
+  };
+
+  configureFlags = "--disable-introspection";
+
+  buildInputs = [ python pkgconfig glib gobjectIntrospection pycairo cairo ];
+
+  meta = {
+    homepage = http://live.gnome.org/PyGObject;
+    description = "Python bindings for Glib";
+  };
+}

pkgs/top-level/all-packages.nix

@@ -5415,6 +5415,8 @@ let
 
   pygobject = pythonPackages.pygobject;
 
+  pygobject3 = pythonPackages.pygobject3;
+
   pygtk = pythonPackages.pygtk;
 
   pyGtkGlade = pythonPackages.pyGtkGlade;
@@ -5762,7 +5764,10 @@ let
 
   bcm43xx = callPackage ../os-specific/linux/firmware/bcm43xx { };
 
-  bluez4 = callPackage ../os-specific/linux/bluez { };
+  bluez4 = callPackage ../os-specific/linux/bluez {
+    pygobject = pygobject3;
+  };
+
   bluez5 = lowPrio (callPackage ../os-specific/linux/bluez/bluez5.nix { });
 
   bluez = bluez4;

pkgs/top-level/python-packages.nix

@@ -91,6 +91,11 @@ pythonPackages = python.modules // rec {
     inherit python;
   };
 
+  pygobject3 = import ../development/python-modules/pygobject/3.nix {
+    inherit (pkgs) stdenv fetchurl pkgconfig glib gobjectIntrospection cairo;
+    inherit python pycairo;
+  };
+
   pygtk = import ../development/python-modules/pygtk {
     inherit (pkgs) fetchurl stdenv pkgconfig glib gtk;
     inherit python buildPythonPackage pygobject pycairo;