I found a bug in libcompat. GHC-6.3 automatically defines mingw32_TARGET_OS macro, but previous versions does't. When GHC is compiled with GHC < 6.3 then System.FilePath and probably some other modules aren't compiled properly. What should be done? Maybe it is enough to add #include <ghcconfig.h> in the begining of each module from libcompat but I don't know whether this will not affect something other. Main.hs from ghc-pkg imports Distribution.Compat.ReadP which is hiden module when GHC is compiled with GHC-6.3 but it is available from libcompat when GHC < 6.3 is used. Cheers, Krasimir __________________________________ Do you Yahoo!? The all-new My Yahoo! - Get yours free! http://my.yahoo.com