Include recipe for building vagrant box

[pesterhazy]

Vagrant is a useful way to try out nixos, making it as simple as

vagrant init zimbatm/nixos-14.12-x86_64
vagrant up`

on any platform.

There already is a working recipe for building a Vagrant box: https://github.com/zimbatm/nixbox. It would be great to integrate the recipe into nixpkgs. Also it would be useful if nix boxes were built automatically with any release. Does that seem like something that should fit into nixpkgs?

Previous discussion on the mailing list: http://lists.science.uu.nl/pipermail/nix-dev/2015-July/017718.html

I'm interested but won't have time to work on this short term, but I'm creating this issue to track progress.

[Profpatsch]

(triage) If no one wants to work on this, I suggest we close.