diff -up Babel-2.3.4/setup.py.orig Babel-2.3.4/setup.py

--- Babel-2.3.4/setup.py.orig	2016-04-11 11:58:25.000000000 +0200

+++ Babel-2.3.4/setup.py	2016-04-25 13:35:54.458765892 +0200

@@ -59,7 +59,10 @@ setup(

         # This version identifier is currently necessary as

         # pytz otherwise does not install on pip 1.4 or

         # higher.

-        'pytz>=0a',

+        ### But the version confuses setuptools 8 and higher so remove it in the

+        ### system package

+        #'pytz>=0a',

+        'pytz',

     ],

     cmdclass={'import_cldr': import_cldr},