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Summary: A set of tools for virtualenv
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Home-page: http://github.com/fireteam/virtualenv-tools
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Author-email: support@fireteam.net
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This repository contains scripts we're using at Fireteam for our
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deployment of Python code. We're using them in combination with
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salt to build code on one server on a self contained virtualenv
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and then move that over to the destination servers to run.
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Why not virtualenv --relocatable?
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For starters: because it does not work. relocatable is very
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limited in what it does and it works at runtime instead of
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making the whole thing actually move to the new location. We
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ran into a ton of issues with it and it is currently in the
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process of being phased out.
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Why would I want to use it?
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The main reason you want to use this is for build caching. You
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have one folder where one virtualenv exists, you install the
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latest version of your codebase and all extensions in there, then
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you can make the virtualenv relocate to a target location, put it
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into a tarball, distribute it to all servers and done!
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First time: create the build cache
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$ mkdir /tmp/build-cache
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$ virtualenv --distribute /tmp/build-cache
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Now every time you build:
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$ . /tmp/build-cache/bin/activate
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$ pip install YourApplication
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Build done, package up and copy to whatever location you want to have
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Once unpacked on the target server, use the virtualenv tools to
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update the paths and make the virtualenv magically work in the new
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location. For instance we deploy things to a path with the
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hash of the commit in:
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$ virtualenv-tools --update-path /srv/your-application/<hash>
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To also update the Python executable in the virtualenv to the
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system one you can reinitialize it in one go:
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$ virtualenv-tools --reinitialize /srv/your-application/<hash>
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Compile once, deploy whereever. Virtualenvs are completely self
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contained. In order to switch the current version all you need to
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do is to relink the builds.
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Classifier: License :: OSI Approved :: BSD License
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Classifier: Programming Language :: Python
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