Hi, directory 1.2 switches to being based on 'time' rather than 'old-time'. Because time values are exposed in its external API, this is causing some disruption. In particular something like this pattern seems relatively common: getModTime :: FilePath -> IO EpochTime getModTime path = do (TOD s _) <- getModificationTime path return $! fromIntegral s i.e. get the modification time of a file in seconds since the UNIX epoch. The replacement is something like: t <- getModificationTime path return $! fromInteger $ floor $ t `diffUTCTime` UTCTime (fromGregorian 1970 1 1) 0 But if you want to be backwards compatible then cabal flags and CPP are needed, so it's all a bit verbose. Amongst the dependencies of darcs, I've found myself making a similar change to three packages now (unix-compat, tar, zip-archive), so I wonder if it's worth putting this function somewhere central? One problem is that it's too late to put it in directory, because 1.2.0.0 was shipped with ghc 7.6.1 and so packages need to work against that version. How do people feel about a small package, e.g. 'directory-time' or 'modtime'? Or is there some cleaner workaround that I've missed? Cheers, Ganesh