Express our required unittest2 version.

This should avoid incompatibilities as reported in
https://github.com/testing-cabal/testtools/issues/121.

Change-Id: I319e2e572c40a589ecbb2be74247f8b1ee7f192b

1 files changed, 1 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index 7aa32ed..1d94893 100755
--- a/setup.py
+++ b/setup.py
@@ -82,6 +82,6 @@ setup(name='testtools',
         # 'mimeparse' has not been uploaded by the maintainer with Python3 compat
         # but someone kindly uploaded a fixed version as 'python-mimeparse'.
         'python-mimeparse',
-        'unittest2',
+        'unittest2>=0.8.0',
         ],
       )