Yep, you're right - `not MacOS.prefer_64_bit?`.

I realize now this is somewhat moot though, given `depends_on :macos => :snow_leopard`. Sorry to bikeshed.

(`Hardware.is_32_bit?` and `Hardware.is_64_bit?` just check whether the CPU is 32/64-bit. Leopard has notably broken dev tools WRT building 64-bit code, so `MacOS.prefer_64_bit?` is used to ensure building 32-bit on Leopard regardless of CPU capacity.)