Try to fix #88 by being lazy a different way.

constance/__init__.py

@@ -1,12 +1,13 @@
-from .base import Config
-from django.utils.functional import SimpleLazyObject
+from django.utils.functional import LazyObject
 
 __version__ = '1.0'
 
+default_app_config = 'constance.apps.ConstanceConfig'
 
-try:
-    from django.apps import AppConfig  # noqa
-except ImportError:
-    config = SimpleLazyObject(Config)
-else:
-    default_app_config = 'constance.apps.ConstanceConfig'
+
+class LazyConfig(LazyObject):
+    def _setup(self):
+        from .base import Config
+        self._wrapped = Config()
+
+config = LazyConfig()

constance/admin.py

@@ -14,7 +14,6 @@ from django.shortcuts import render_to_response
 from django.template.context import RequestContext
 from django.utils import six
 from django.utils.formats import localize
-from django.utils.functional import SimpleLazyObject
 from django.utils.translation import ugettext_lazy as _
 
 try:
@@ -28,10 +27,9 @@ except ImportError:  # Django < 1.4
     from django.conf.urls.defaults import patterns, url
 
 
-from . import settings
-from .base import Config as ConfigClass
+from . import LazyConfig, settings
 
-config = SimpleLazyObject(ConfigClass)
+config = LazyConfig()
 
 
 NUMERIC_WIDGET = forms.TextInput(attrs={'size': 10})

constance/apps.py

@@ -1,15 +1,7 @@
 from django.apps import AppConfig
 from django.utils.translation import ugettext_lazy as _
-from django.utils.functional import SimpleLazyObject
-
-
-from .base import Config
 
 
 class ConstanceConfig(AppConfig):
     name = 'constance'
     verbose_name = _('Constance')
-
-    def ready(self):
-        super(ConstanceConfig, self).ready()
-        self.module.config = SimpleLazyObject(Config)