I am finding that very large compilations fall over with ghc --make because ghc --make runs out of heap space. However if I restart them they manage to continue. Is there a way of making ghc --make use memory more efficiently?

Bashing on GHC's memory use is something we want to do, but it'll be after the 5.02 release. Retainer and lag-drag-void profiling is going in post-5.02 too, which should help us track down any space leaks. Meanwhile, memory is cheap at the moment! Cheers, Simon