Hi. I'm playing with hs-plugins (recent darcs version) on MacOS X (ghc-6.4.1) and I get some weird unresolved symbols. Here's what I'm trying to do: Test.hs ------- module Test where test = putStrLn "test" Main.hs ------- import System.Plugins main = do r <- load_ "Test.o" [] "test" case r of LoadFailure msg -> print msg LoadSuccess _ m -> m Now I do: $ ghc -c Test.hs $ ghc Main.hs -package plugins $ ./a.out a.out: unknown symbol `_SystemziIO_putStrLn_closure' a.out: user error (resolvedObjs failed.) I get the same error when I try with plugins-0.9.10. I've tried to use loadPackage "base" and resolveObjs to no avail. What does work (not surprisingly) is to use putStrLn in Main.hs to force it to be linked in but that's not really a solution. If someone knows what I'm doing wrong I'd be very grateful. / Ulf