Kombu also requires ordereddict backport to support python2.6, more eggs.

eggs.ini

@@ -51,6 +51,7 @@ mock = 1.0.1
 nose = 0.11.1
 NoseHTML = 0.4.1
 NoseTestDiff = 0.1
+ordereddict = 1.1
 paramiko = 1.11.1
 Parsley = 1.1
 Paste = 1.7.5.1

lib/galaxy/queue_worker.py

@@ -10,8 +10,9 @@ import sys
 import galaxy.queues
 from galaxy import eggs, util
 if sys.version_info < (2, 7, 0):
-    # Kombu requires importlib to function under Python 2.6.
+    # Kombu requires importlib and ordereddict to function under Python 2.6.
     eggs.require('importlib')
+    eggs.require('ordereddict')
 eggs.require('kombu')
 
 from kombu import Connection

lib/galaxy/queues.py

@@ -9,8 +9,9 @@ import sys
 from galaxy import eggs
 
 if sys.version_info < (2, 7, 0):
-    # Kombu requires importlib to function in Python 2.6.
+    # Kombu requires importlib and ordereddict to function in Python 2.6.
     eggs.require('importlib')
+    eggs.require('ordereddict')
 eggs.require('kombu')
 from kombu import Exchange, Queue