[Haskell-cafe] HUnit

I am in love with HUnit and QuickCheck. However, I am missing one important functionality I want to call a command line program that will search all the .hs files I have in a particular directory, pull out all HUnit test (based on what they are called, or perhaps their type signature) and run them all. I have done a bit of a search and can't find anything like this, am I going to have to write it myself? Matt