Merge ~cjwatson/launchpad:unittest2-1.1.0+lp1 into launchpad:master

[Colin Watson]

Upgrade to unittest2 1.1.0+lp1

unittest2 was the only one of Launchpad's dependencies that couldn't be built into a wheel (see https://github.com/pypa/setuptools/issues/409), which was an annoying limitation that got in the way of making some other build system improvements. Switch to a local fork that fixes this.

Dependencies MP: https://code.launchpad.net/~cjwatson/lp-source-dependencies/+git/lp-source-dependencies/+merge/379682

[Tom Wardill (twom)]

review: Approve

diff --git a/constraints.txt b/constraints.txt
index 9604568..2a529fd 100644
--- a/constraints.txt
+++ b/constraints.txt
@@ -111,7 +111,9 @@ python-mimeparse==1.6.0
 python-subunit==1.3.0
 testtools==2.3.0
 traceback2==1.4.0
-unittest2==1.1.0
+#unittest2==1.1.0
+# lp1 Set version directly in setup.py to fix wheel building.
+unittest2==1.1.0+lp1
 zc.lockfile==1.4
 zdaemon==4.3
 zodbpickle==1.0.3