From c2dedaa2b87e293697be7fea9c808e95e20c0bb7 Mon Sep 17 00:00:00 2001
From: Matthew Tretter <m@tthewwithanm.com>
Date: Tue, 8 Jan 2013 20:57:19 -0500
Subject: [PATCH] Use file name; not file, which can't be pickled

---
 imagekit/specs/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/imagekit/specs/__init__.py b/imagekit/specs/__init__.py
index de1db8d..79ff107 100644
--- a/imagekit/specs/__init__.py
+++ b/imagekit/specs/__init__.py
@@ -104,7 +104,7 @@ class ImageSpec(BaseImageSpec):
 
     def get_hash(self):
         return md5(pickle.dumps([
-            self.source,
+            self.source.name,
             self.kwargs,
             self.processors,
             self.format,