we can serialize Config now

tiramisu/setting.py

@@ -105,7 +105,7 @@ rw_remove = set(['permissive', 'everything_frozen', 'mandatory'])
 
 
 # ____________________________________________________________
-class _NameSpace:
+class _NameSpace(object):
     """convenient class that emulates a module
     and builds constants (that is, unique names)
     when attribute is added, we cannot delete it
@@ -591,3 +591,23 @@ class Settings(object):
         :returns: path
         """
         return self.context().cfgimpl_get_description().impl_get_path_by_opt(opt)
+
+    def get_modified_properties(self):
+        return self._p_.get_modified_properties()
+
+    def get_modified_permissives(self):
+        return self._p_.get_modified_permissives()
+
+    def __getstate__(self):
+        return {'_p_': self._p_, '_owner': str(self._owner)}
+
+    def _impl_setstate(self, storage):
+        self._p_._storage = storage
+
+    def __setstate__(self, states):
+        self._p_ = states['_p_']
+        try:
+            self._owner = getattr(owners, states['_owner'])
+        except AttributeError:
+            owners.addowner(states['_owner'])
+            self._owner = getattr(owners, states['_owner'])