Required default arg.

1 files changed, 1 insertions, 1 deletions

diff --git a/cdist b/cdist
index bacfd2c..99c6057 100755
--- a/cdist
+++ b/cdist
@@ -205,7 +205,7 @@ class ChrootEnvironment(Environment):
 #
 
 class HostEnvironment(Environment):
-    def __init__(self, directory):
+    def __init__(self, directory=None):
         super(HostEnvironment, self).__init__()
         if directory is None:
             self.directory = tempfile.mkdtemp()