[Haskell-cafe] haskell code pretty printer ?

Hello, is there a pretty printer for haskell code somewhere ? I've googled and caballisted for this without success. I've written some small script using Language.Haskell.Pretty and Language.Haskell.Parser but the result isn't that 'pretty'. I mean, it outputs readable code but supercombinator's definitions aren't separated by a blank line for instance (despite having put 'spacing' to 'True'). Do you know of such a tool ? Regards, Paul