is-tagged.py: Don't fail if Mercurial isn't available.

--HG--
branch : HEAD

diff --git a/is-tagged.py b/is-tagged.py
index f48d001bb714b5938446189d1ff75733cfe6fdff..59909d6ef4e14fb5d9eadde3e7c20ffd3c87c0c7 100644 (file)
--- a/is-tagged.py
+++ b/is-tagged.py
@@ -17,8 +17,10 @@
 """
 import re
 import sys
-
-from mercurial import hg, ui
+try:
+    from mercurial import hg, ui
+except ImportError:  # no Mercurial at all
+    sys.exit(0)
 try:
     from mercurial.error import Abort, RepoError
 except ImportError: