Am Donnerstag, 15. April 2004 11:35 schrieb Robert Will:
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I think what Haskellers (and others) can do in most cases is to factor out platform dependent parts to mini-modules which have different implementations but the same interface. The version of such a module is choosen by the path it resides in during the build process. (Simplest case: the -i option of the compiler.) This also has the advantage, that the dependencies are made explicit, while preprocessing is a very implicit technique, e.g. you have to check type and even syntactic correctness of each possible version separately.
I think, this isn't a solution for the problem I originally spoke about, namely the inability of Haddock to handle deriving clauses fully. Of course, the best solution here would be if Haddock would fully support deriving but I don't want to put pressure onto Simon Marlow ;-).
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Wolfgang