Interesting announcement on the debian-haskell list:
The OS team at Linspire, Inc. would like to announce that we are standardizing on Haskell as our preferred language for core OS development.
We are redoing a bunch of our infrastructure using Haskell as our common standard language. Our first task is redoing our Debian package builder (aka autobuilder) in Haskell. Other tools such as ISO builders, package dependency checkers are in progress. The goal is to make a really tight simple set of tools that will let developers contribute to Freespire, based on Debian tools whenever possible. Our hardware detector, currently in OCaml, is on the block to be rewritten as well.
I've been planning to get a black MacBook this week and put Ubuntu on it; it'd be interesting to see if I can get Freespire tools running on that some day...