[IPython-dev] Minimum virtualenv version for IPython development?

Tim Pitman tapitman11 at gmail.com
Mon Sep 23 21:40:11 EDT 2013

Hey all,

When using Python 2.7.5 built from source, and installing the latest
virtualenv, the following command from the IPython github page works fine:

pip install -e ".[notebook]"

However, when using Python 2.7.3 and virtualenv from the Ubuntu
12.04 repos, the pip installed by virtualenv (apparently 1.1) fails to
execute that command with the following message:

--editable=.[notebook] should be formatted with svn+URL, git+URL, hg+URL or

Seems like that version of pip is missing some newer features? Actually I
haven't been able to find documention for the -e ".[notebook]" syntax on
the pip site. Apparently it installs all of the dependencies for the
"notebook" entry in setup.py?

Basically my questions are:

Is there a minimum version of virtualenv/pip required for developing

Is anyone developing off a system python from Ubuntu 12.04?

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