We need to import the vocabulary.py module explicitly to make sure the

vocabulary registry gets registered. There's no guarantee that someone
else will import it for us.

__init__.py

@@ -0,0 +1,20 @@
+##############################################################################
+#
+# Copyright (c) 2006 Zope Corporation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Schemas
+
+$Id$
+"""
+# we want to hook-up our own vocabulary registry; importing the module
+# is enough for that
+import zope.app.schema.vocabulary