A full binary distribution of GHC 6.8.1 for Mac OS X 10.5 (Leopard) is available from http://www.cse.unsw.edu.au/~chak/haskell/ghc-6.8.1-i386-apple-darwin.tar.bz2 To use it, you need two other pieces of software installed: Xcode 3.0 -- as available from the Leopard upgrade/install DVD or developer.apple.com readline 5.2 -- preferably installed via macports in /opt/local Moreover, if you have the GMP.framework installed (a leftover from 10.4), remove it first. To install, follow the instructions at http://www.haskell.org/ghc/docs/latest/html/users_guide/installing-bin-distr... Happy Haskell Hacking! Manuel -=- GHC on Mac OS X 10.5 mini FAQ: * When trying to compile GHC, I get a segv on Float.lhs (of the base package is compiled). Why? AFAIK this only happens if the GHC you try to bootstrap with is too old (eg, 6.6). * With the binary distribution why do I get a link error complaining about "_environ"? You still have the GMP framework installed. It was linked against an old libc, which causes the error. Remove the GMP framework. * What GMP library is used? GHC 6.8.1 includes an embedded GMP library (ie, it's bundled with the source). It is compiled as a static library and placed into the GHC install tree.