vcs: make the not initialiazed exception more meaningfull.

rhodecode/lib/vcs/connection.py

@@ -1,33 +1,35 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2014-2016  RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 """
 Holds connection for remote server.
 """
 
 
 def _not_initialized(*args, **kwargs):
     """Placeholder for objects which have to be initialized first."""
-    raise Exception("rhodecode.lib.vcs is not yet initialized")
+    raise Exception(
+        "rhodecode.lib.vcs is not yet initialized. "
+        "Make sure `vcs.server` is enabled in your configuration.")
 
 # TODO: figure out a nice default value for these things
 Git = _not_initialized
 Hg = _not_initialized
 Svn = _not_initialized