Resume using a fully-constructed config namespace

letsencrypt/cli.py

@@ -744,8 +744,8 @@ def _set_by_cli(var):
         plugins = plugins_disco.PluginsRegistry.find_all()
         # reconstructed_args == sys.argv[1:], or whatever was passed to main()
         reconstructed_args = _parser.args + [_parser.verb]
-        _set_by_cli.detector = prepare_and_parse_args(plugins, reconstructed_args,
-                                                      detect_defaults=True)
+        default_args = prepare_and_parse_args(plugins, reconstructed_args, detect_defaults=True)
+        _set_by_cli.detector = configuration.NamespaceConfig(default_args, fake=True)
 
     try:
         # Is detector.var something that isn't false?

letsencrypt/configuration.py

@@ -34,7 +34,7 @@ class NamespaceConfig(object):
     """
     zope.interface.implements(interfaces.IConfig)
 
-    def __init__(self, namespace):
+    def __init__(self, namespace, fake=False):
         self.namespace = namespace
 
         self.namespace.config_dir = os.path.abspath(self.namespace.config_dir)
@@ -42,7 +42,8 @@ class NamespaceConfig(object):
         self.namespace.logs_dir = os.path.abspath(self.namespace.logs_dir)
 
         # Check command line parameters sanity, and error out in case of problem.
-        check_config_sanity(self)
+        if not fake:
+            check_config_sanity(self)
 
     def __getattr__(self, name):
         return getattr(self.namespace, name)