Please don't throw away YHC I think it's important to have various implementations of Haskell around. We don't want the language to become stale.
I'm not suggesting throwing away Yhc, I'm simply suggesting a change of front end. Currently Yhc uses the nhc98 front end, but this is proving to be rather unsatisfactory so I suggest moving to using GHC as the front end. This is particularly 'not killing' Yhc because Yhc is really a back-end modification, so it doesn't have a front end 'of its own'.
What I would find very useful is a standard interface to all Haskell front ends. Would it not be a better idea to make the API for GHC and YHC appear the same? That way one could plug a ghc or yhc front end onto their system and it would just work with the minimum of change. I say this because porting HaRe to GHC (from programatica) proved to be an enormous job. It would have been made so much easier if both front ends at least some common structures remaining the same.
Interchangeable front ends is a laudable goal but pretty difficult to achieve. In fact the easiest way to achieve it is for both compilers to use the GHC front-end ;-) Tom