You may find it useful to use External Core (supported in GHC 6.10), which allows GHC to dump its Core representation into a text file with a well-defined format: http://www.haskell.org/ghc/docs/latest/html/users_guide/ext-core.html There is a (relatively) stand-alone library for handling Core programs, under utils/ext-core in the GHC distribution. If you don't find it useful, and have any suggestions as to how it could be improved, I would be interested to know; please CC both me and this list if so. Cheers, Tim -- Tim Chevalier * http://cs.pdx.edu/~tjc * Often in error, never in doubt "Einstein argued that there must be simplified explanations of nature, because God is not capricious or arbitrary. No such faith comforts the software engineer." -- Fred Brooks