I've just uploaded serial-0.1, a library for line-oriented interaction with serial ports on POSIX compatible systems, to Hackage: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/serial At the moment it's just two modules, one of which wraps up the serial connection in a convenience function (System.Serial), and the other (System.Serial.Manager) which further wraps a serial connection in a set of functions to let multiple commands go to a non-blocking device on the far end of the port and, with the proper parsers and a little luck, get the responses sent back to all the right calling functions. The interface is not final yet. I'm using Parsec parsers passed with the command to sort out where return values should go, and that may just become predicates later. Also, if someone who actually knows anything about programming on Windows wants to add that capability, I'd be thrilled. -- Frederick Ross Doctorant, SV/GHI/UPKIN, EPFL Graduate Fellow, The Rockefeller University