os x 64-bit?

Hello, I was wondering if there is a status report anywhere of progress towards making ghc compile 64-bit on Snow Leopard. There are a few trac tickets that seem related: 4263: http://hackage.haskell.org/trac/ghc/ticket/4163 2965: (not sure, trac says the database is locked when I try to look at this one) Is Ian working on this, or anyone else? I'd like to help if I can, and I was wondering where would be the best place to start? I probably won't actually contribute much, but this seems as good a way as any for me to start working with ghc. Cheers, John