Issue #3572 has been updated by James Turnbull.

Status changed from Unreviewed to Needs more information
Keywords set to python pip

There was a proposed package provider at some point that used easy_install but 
that had lots of obvious issues.  I've asked Garth Kidd to comment on the 
ticket - I believe he had some views when that was floating around.
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Feature #3572: manage python virtualenvs
http://projects.puppetlabs.com/issues/3572

Author: Eric Drechsel
Status: Needs more information
Priority: Normal
Assigned to: 
Category: package
Target version: 
Affected version: development
Keywords: python pip
Branch: 


I've been puzzling over how to do python package management via puppet for 
awhile now. 

The obvious bit is to implement a package provider for python packages using 
pip as the backend, using the gem provider as a template. The problem is that 
most python developers (people who care enough to not just use their 
distribution's python library packages) use VirtualEnv to maintain separate 
environments per deployed application. With virtualenv, there is a 1-many 
correspondence between nodes and python environments, which is incompatible 
with package providers as I understand them.

Can some Puppet core person comment on how they would ideally model managed 
virtualenvs under puppet?

just to get things working I'm planning to have two defines:

python::virtualenv(root, ...)

 * just makes an empty env

python::app(root, source (vcs, tarball, or etc), virtualenv (could be None), 
requirements (list or filename within package, in "pip freeze" format))

 * install a python app, run pip to install dependency list
 * derivative defines to config WSGI apps etc

Here are some references:

 * http://github.com/rcrowley/puppet-python/blob/master/manifests/init.pp 
(undocumented)



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