cabal test suite

Evening, I've implemented a Cabal api across the entire package, the verbosity flag is now passed via a monad along with overridable logging functions. Along the way I've also replaced some hardcoded putStrLn with "notice" calls so they always get printed, and it compiles, but I can't run the test suites. Is there any particular reasons why the tests depend on the unix package? I've tried to install them both using msys and Cygwin, both failed, I'm at a loss on how to test this. Tamar