Hey all,

As part of working on Cloudify (http://github.com/cloudify-cosmo) we've had to 
provide a way for customers to install our plugins in an environment where PyPI 
isn't accessible. These plugins are sets of Python packages which necessarily 
depend on one another (i.e. a regular python package with dependencies).

We decided that we want to package sets of wheels together created or 
downloaded by `pip wheel`, add relevant metadata, package them together into a 
single archive (tar.gz or zip) and use the same tool which packs them up to 
install them later on, on the destination hosts.

We came up with a tool (http://github.com/cloudify-cosmo/wagon) to do just that 
and that's what we currently use to create and install our plugins.

While wheel solves the problem of generating wheels, there is no single, 
standard method for taking an entire set of dependencies packaged in a single 
location and installing them in a different location.

We thought it would be a good idea to propose a PEP for that and wanted to get 
your feedback before we start writing the proposal.

The logic behind the PEP is that there's a standard for creating a single 
python package and we would like to propose a layer above it to package 
multiple python packages either for offline environments or any other 
requirement a user may have.

We're currently working on a new rearchitected version of that tool to make it 
more pythonic and clean but the base stays the same.


We would greatly appreciate your feedback on this.

Thanks!


P.S. We encourage you to take a look at the repo (see the `rearchitecture` 
branch) and read the README.
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