MacBooks are not available in .tw yet, so $boss from $job brought me one from .hk. It easily paid for itself in time saved for the first day -- from-scratch Pugs build now takes 10 minutes; "make smoke" 20 minutes; and "make ghci" less than 20 seconds.
Because GHC 6.4.x lacks support for MacIntel, I've built on Wolfgang's previous work and made a binary distribution of GHC 6.5-HEAD. Thanks to testing from obra++, this build should Just Work, without the need to manually fiddle with readline/GMP/cabal/etc.
Incremental development of Haskell code almost feels the same as Perl code now. Wow. :-)