]
vigalchin@ubuntu:~/FTP/Haskell/unix-2.2.0.0$ runhaskell Setup.hs configure
unknown package: unix-2.3.0.0

I suggested this in my other message, before I saw this one, but just to be sure: does it help to do 'runhaskell Setup.hs clean' before doing the configure step?

-Brent