The usage of ui_ prefix in the interfaces seems to make things a tad bit complicated when loading every interface. So _import_name needs to be a tad bit smarter.

mitterlib/ui/__init__.py

@@ -36,7 +36,12 @@ def _import_name(module):
     """Based on the name of the module, return the proper "import"
     statement."""
     (name, _) = os.path.splitext(module)
-    return 'mitterlib.ui.%s' % (name)
+    if name.startswith('ui_'):
+        mask = 'mitterlib.ui.%s'
+    else:
+        mask = 'mitterlib.ui.ui_%s'
+
+    return mask % (name)
 
 
 class Interfaces(object):
@@ -79,6 +84,7 @@ class Interfaces(object):
             # [we could be mean and use random.choice(self._interfaces)]
             import_name = self._interfaces[0]
 
+        _log.debug('Loading interface %s', import_name)
         module_name = _import_name(import_name)
-        module = __import__(module_name, fromlist[module_name])
+        module = __import__(module_name, fromlist=[module_name])
         return module.Interface(connection, self._options)