Hey, I just ran into a problem running the Apache install on a bare slice with nothing on it.
Sprinkle decided that apache_etag_support was the first thing that should be installed, I think because apache recommends it. This fails because there's no Apache installed on the server yet.
I commented out this line:
recommends :apache_etag_support, :apache_deflate_support, :apache_expires_support
And everything worked.
This is with revision 9672cb7 of passenger-stack and sprinkle 0.3.1.