bluez4: reintroduce to nixpkgs

It's still needed by KDE4. It was there, just unreferenced from all-packages.

pkgs/os-specific/linux/bluez/default.nix

@@ -5,8 +5,8 @@ assert stdenv.isLinux;
 
 let
   inherit (pythonPackages) python;
-  pythonpath = "${pythonPackages.dbus}/lib/${python.libPrefix}/site-packages:"
-    + "${pythonPackages.pygobject}/lib/${python.libPrefix}/site-packages";
+  pythonpath = "${pythonPackages.dbus-python}/lib/${python.libPrefix}/site-packages:"
+    + "${pythonPackages.pygobject2}/lib/${python.libPrefix}/site-packages";
 in stdenv.mkDerivation rec {
   name = "bluez-4.101";
    

pkgs/top-level/all-packages.nix

@@ -10848,6 +10848,8 @@ with pkgs;
 
   bluez5 = callPackage ../os-specific/linux/bluez/bluez5.nix { };
 
+  bluez4 = callPackage ../os-specific/linux/bluez { };
+
   # Needed for LibreOffice
   bluez5_28 = lowPrio (callPackage ../os-specific/linux/bluez/bluez5_28.nix { });