How do I deploy development code with buildout?

This was originally posted on blogger here.

I've got a project where I want people to run a buildout of Plone 3 that adds in the development trunk into a site, and also creates the admin account and starts up Plone. I know this can be done because p4a does it. However, I want a much simpler version of things.

If I can get this done, then my KSS tutorial is done.