add force_permissive in mandatory_warnings

tiramisu/config.py

@@ -734,8 +734,3 @@ class MetaConfig(GroupConfig):
             child._impl_meta = weakref.ref(self)
 
         super(MetaConfig, self).__init__(children, session_id, persistent, descr)
-
-
-def mandatory_warnings(config):  # pragma: optional cover
-    #only for retro-compatibility
-    return config.cfgimpl_get_values().mandatory_warnings()

tiramisu/value.py

@@ -441,7 +441,7 @@ class Values(object):
                 raise ValueError(_("information's item"
                                    " not found: {0}").format(key))
 
-    def mandatory_warnings(self):
+    def mandatory_warnings(self, force_permissive=False):
         """convenience function to trace Options that are mandatory and
         where no value has been set
 
@@ -462,7 +462,8 @@ class Values(object):
                     path = opt.impl_getpath(self._getcontext())
                     try:
                         self._get_cached_item(opt, path=path,
-                                              force_properties=frozenset(('mandatory',)))
+                                              force_properties=frozenset(('mandatory',)),
+                                              force_permissive=force_permissive)
                     except PropertiesOptionError as err:
                         if err.proptype == ['mandatory']:
                             _ret.append(path)