gnu: Add python2-dbus.

* gnu/packages/python.scm (python2-dbus): New variable.

gnu/packages/python.scm

@@ -2902,3 +2902,14 @@ features useful for text console applications.")
 implementation of D-Bus.")
     (home-page "http://www.freedesktop.org/wiki/Software/DBusBindings/")
     (license expat)))
+
+(define-public python2-dbus
+  (package (inherit python-dbus)
+    (name "python2-dbus")
+    (inputs `(("python" ,python-2)
+              ,@(alist-delete "python"
+                              (package-inputs python-dbus)
+                              equal?)))
+    ;; FIXME: on Python 2, the test_utf8 fails with:
+    ;; "ValueError: unichr() arg not in range(0x10000) (narrow Python build)"
+    (arguments `(#:tests? #f))))