On Mon, Dec 21, 2009 at 4:32 AM, Conor McBride
I thought I'd record my upgrade exerience (so far) in case anyone else finds it useful, and (more selfishly) in case anyone has some helpful advice. Summary of situation
You just described what I went through last night with GHC 6.12 before giving up and going to bed, except that I'm on Snow Leopard (OS X 10.6). I got the "undefined symbols" errors when trying to compile cpphs, which came up at some point in the build process when trying to install Happstack via cabal 0.8.0. I was wondering if if something was getting confused between my MacPorts libraries and OS X, and your experience certainly makes it seem that way; I have the MacPorts paths set up in my .cabal/config file as extra-include-dirs and extra-lib-dirs, otherwise I can't get particular libraries (e.g., pcre-lite) to compile. I'm going to wipe my .cabal and .ghc and try from scratch to build as much as possible without the MacPorts paths, only re-adding them for single builds as necessary; I'll write back after I see how that goes.