Try rebasing! Due to some unfortunate circumstances the performance tests (T9630 and haddock.base) became fragile. This should be fixed, but you need to rebase off of the latest master (at at least c931f2561207aa06f1750827afbb68fbee241c6f) for the tests to pass. Happy Hacking, David Eichmann -- David Eichmann, Haskell Consultant Well-Typed LLP, http://www.well-typed.com Registered in England & Wales, OC335890 118 Wymering Mansions, Wymering Road, London W9 2NF, England