getpelican/pelican — pull request #799 by saimn (2013-03-23 15:14:40+00:00)
Title: Install webassets & cssmin only for Python 2.

webassets is not py3 compatible yet. This will avoid a failed install of
webassets for each py3 Travis build. (see https://github.com/getpelican/pelican/pull/706#issuecomment-15338366)