On Thu, Sep 18, 2008 at 12:30:42AM +0100, Claus Reinke wrote:

So far, I had assumed that every tool defined its own macro, but it seems that __GLASGOW_HASKELL__ is defined by ghc and by cabal, while __HADDOCK__ is defined only by the latter. Is that right?

Yes, Cabal defines __HADDOCK__ only for haddock1. haddock2 is supposed to be compatible with GHC.