This will have to be done in steps, so I might break this issue down as support gets closer. Eventually, I'd like to make it such that the yaml file has something like:

os:
  :windowsxp
  :osx
  :linux

Or whatever. So you can build on multiple operating systems as well as just Linux.

This has some interesting issues:

1. licensing
2. availablility
3. combinatorial explosion of rubies and platforms