[seryl]

I use something relatively similar, but I do it with Chef.

(shameless plug) Kindness: A nice way to bootstrap your box (with chef) http://joshtoft.com/kindness/

It takes advantage of site-cookbooks with Chef, letting you bring in your own site-cookbooks and also takes your chef-solo.json (if it exists).

I made it to get away from the rake dotfile sillyness.