metaconfig support

tiramisu/setting.py

@@ -181,7 +181,8 @@ class ConfigBag:
                 return 'validator' in self._setting_properties
             return self._validate
         if key == 'setting_properties':
-            if self.force_unrestraint or not self._validate:
+            #if self.force_unrestraint or not self._validate:
+            if self.force_unrestraint:
                 return None
             return self._setting_properties
         if key == '_setting_properties':
@@ -196,6 +197,11 @@ class ConfigBag:
     def __setattr__(self, key, value):
         if key == 'validate':
             self._validate = value
+            #FIXME
+            try:
+                del self._setting_properties
+            except AttributeError:
+                pass
         else:
             super().__setattr__(key, value)