Porting to powerpc-linux

I'm considering taking some effort to port GHC to powerpc linux. The task seems moderately doable, given that GHC once ran on the powerpc architecture. I guess as a good first question: should I start with 4.08.1, or should I venture off with the CVS tree. The driver in CVS seems to have been written in Haskell, and it seems to be needed to build the runtime. This sounds like it would preclude building from .hc files. I've got my x86 linux box ready to build some unregistered .hc files. Dave (looking forward to debugging RTS) Brown