[Haskell-cafe] suffix or operands invalid for `push'

Hello, Above error is one of those that appear when using GHC on the 64-bit Snow Leopard. I've already patched my /usr/bin/ghc to mention -optc-m32 -opta-m32 -optl-m32. However, the error still occurs when doing 'cabal haddock' in *some* packages. For example, a local project of mine builds just fine, but trying to cabal haddock the happstack-helpers package goes horribly wrong and no documentation is generated. How do I fix this? And why does it happen only in certain packages? Many thanks, Martijn.