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On 10/24/2013 03:52 AM, Victor Sergeyev wrote:
> Hello all,
>
> I noticed, that when I run tests using tox I get some redundant modules
> installed to tox virtual environments. At the moment, pep8 specific
> requirements (such as pep8, flake8 and so on) are stated in
> test-requirements.txt file, which is meant to contain testing specific
> modules (nose, testtools, etc). So when we run tox, it installs those
> unnecessary pep8 libraries into py26, py27 environments. The same is
> true for pep8 environment - tox installs all libraries from
> test-requirements.txt there, but only pep8 specific modules are actually
> needed.
>
> I think, it would be nice to move pep8 specific requirements from
> test-requirements.txt to a separate file (pep8-requirements.txt,
> perhaps) to avoid this situation. It would save network traffic and
> reduce the time it takes to create virtual environments.
>
> Thoughts? Does it sound reasonable?

Actually, not. The point of the test requirements is we've got 
everything you need for tox, breaking it up and making it more 
complicated seems counter productive.

# this massively speeds up pip install
export PIP_DOWNLOAD_CACHE=~/.pip/cache

Added to your .bashrc will reduce the network traffix needed for tox. 
Also, I believe 1.6.1 will reuse envs by default.

	-Sean

-- 
Sean Dague
http://dague.net