The Nikola project is deprecating Python 2.7 (+2.x/3.x user survey results)

[Laura Creighton]

In a message of Thu, 01 Oct 2015 10:43:58 -0600, paul.hermeneutic at gmail.com wri
tes:
>Python 3 has venv in the kit. Is there a reason users should get the
>virtualenv add-on?

Yes.  It is known to work.
Debian packager doko (Matthias Klose) thinks that venv is not debian
compatible. Thus when you try to use it, on a debian system, it doesn't
work unless you have installed Barry Warsaw's package fix, because you
don't have an ensure-pip.

This should only affect debian and their downstream, though not
ubuntu as Barry fixed things.  See my bug report, here, after a
frustrating morning trying to see why venv didn't work -- 'debian
broke my python' was not the first tree I climbed in trying to
understand this.

https://bugs.python.org/issue25151

Actually, search there for venv and pyenv and read all about it.
... pyenv is going away, use python -m instead ...

So unless you want to help your debian users get a working venv,
I would stick with telling everybody to use virtualenv for now.

Laura