From 7a3cc410549474de18ff195c0e1dcd76fa92f64b Mon Sep 17 00:00:00 2001
From: John Chilton <jmchilton@gmail.com>
Date: Fri, 8 Jan 2016 11:42:08 +0000
Subject: [PATCH] Fix optional watchdog handling.

Broken with 4086dd61dafe562ec01a8b1fce687a539aedbcfe.

Thanks for bug report from @nsoranzo.
---
 lib/galaxy/tools/toolbox/watcher.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/galaxy/tools/toolbox/watcher.py b/lib/galaxy/tools/toolbox/watcher.py
index ef4b65947bd..554f2d7a94e 100644
--- a/lib/galaxy/tools/toolbox/watcher.py
+++ b/lib/galaxy/tools/toolbox/watcher.py
@@ -9,6 +9,7 @@ try:
     from watchdog.observers.polling import PollingObserver
     can_watch = True
 except ImportError:
+    Observer = None
     FileSystemEventHandler = object
     PollingObserver = object
     can_watch = False