From cb44046a8a3eed7b52d8762872e28afd4974a31b Mon Sep 17 00:00:00 2001
From: Markus Unterwaditzer <markus@unterwaditzer.net>
Date: Mon, 15 Dec 2014 20:26:51 +0100
Subject: [PATCH] Make global variables immutable

---
 vdirsyncer/cli.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/vdirsyncer/cli.py b/vdirsyncer/cli.py
index de3dcfc..e1f9843 100644
--- a/vdirsyncer/cli.py
+++ b/vdirsyncer/cli.py
@@ -35,8 +35,8 @@ except ImportError:
 
 cli_logger = log.get(__name__)
 
-GENERAL_ALL = set(['status_path', 'passwordeval'])
-GENERAL_REQUIRED = set(['status_path'])
+GENERAL_ALL = frozenset(['status_path', 'passwordeval'])
+GENERAL_REQUIRED = frozenset(['status_path'])
 
 
 class CliError(RuntimeError):