[Haskell-cafe] Re: nhc vs ghc

brad clawsie wrote:

can anyone provide a concise list of the major differences between nhc98 and ghc? for example, can i build a cabal package with nhc98? i get that ghc and nhc98 are not interchangeable, otherwise i am not sure

The major difference is that nhc98 is pretty much Haskell98 only, so no multi parameter type classes, rank-n-polymorphism or GADTs. It does support existential types, though. In particular, the popular monad transformer library isn't Haskell98, at least concerning the type classes. Regards, apfelmus