Meanwhile in few other places it's not (see e.g. PyPI).
It also worth mentioning that Python 2.6 is not supported by PSF since 2013-10-29. And few days ago incompatible change landed in our master, causing our Travis build to fail (see e.g.: 3).
It would be great to discuss this issue and decide if we want still to support 2.6 or not.
I'm for abandoning it.