Hi Simon (and others), I've just managed to build package ghc and have managed to successfully use it in a test program of mine. However, I can't seem to load it into GHCi. The error I'm obtaining is: GHCi runtime linker: fatal error: I found a duplicate definition for symbol _OutOfHeapHook whilst processing object file /usr/local/lib/ghc-6.3/HSghc.o This could be caused by: * Loading two different object files which export the same symbol * Specifying the same object file twice on the GHCi command line * An incorrect `package.conf' entry, causing some object to be loaded twice. GHCi cannot safely continue in this situation. Exiting now. Sorry. I see that these symbol is exported by HSrts.o and HSghc.o so it makes sense that this error should occur. But since the symbol in HSghc.o originally comes from ghc/parser/hschooks.c and its purpose is to override the hooks in the RTS it seems strange that this should be an error. Is there any way that I can suppress this error through use of flags in the package.conf for package ghc? I've been told that their may be other good reasons why package ghc doesn't load into GHCi by Don Stewart. What are these reasons exactly? My final question is, if GHCi can't load package ghc just yet then what are the major issues that would need to be solved before it could? Cheers, Sean