Make the dependency on pytz for the tests explicit in `setup.py`.

diff --git a/setup.py b/setup.py
index 5cfbf6b6f9b522123afd5bcc73a45b609965779d..183face42799e94c74f120b5edbbdbb74fc53e60 100755 (executable)
--- a/setup.py
+++ b/setup.py
@@ -54,6 +54,7 @@ setup(
     packages = ['babel', 'babel.messages'],
     package_data = {'babel': ['global.dat', 'localedata/*.dat']},
     test_suite = 'babel.tests.suite',
+    tests_require = ['pytz'],
 
     entry_points = """
     [console_scripts]