I really like what you've done with prove. I am wondering, though, why it no longer allows you to include or exclude tests? That's not a function that I often use, but sometimes I just want to be able to do something like this to run all "product" tests:

Then, when I'm satisfied that that the product tests run, I run the full test suite. This is very handy when you have a test suite that takes an hour to run, but you can zip through your product tests in about five minutes.

That's a minor nit, though. It's great work you've put together!