Am 02.11.2010 18:03, schrieb Thorkil Naur:
> Hello,
>
> On Tue, Nov 02, 2010 at 01:03:04PM +0100, Christian Maeder wrote:
>> ...
>> Are there better workarounds?
>
> I am not sure about that, I assume that you have looked at http://hackage.haskell.org/trac/ghc/ticket/4068?

no, I found Simon Michael's message
http://www.mail-archive.com/haskell-cafe@haskell.org/msg81961.html
by chance.

I did not try out his extra-lib-dirs proposal, since all cabal packages
were already installed.

And I agree with him that it should be documented somewhere more
prominent and that avoiding macports is no (good) solution.

I'll add his proposal to your (closed) ticket to increase the hit rate.

Cheers Christian

His proposed solution works until you try to link a Haskell project to a macports lib that requires libiconv. It's also inconvenient that you'll sometimes need to unpack hackage code and manually edit the .cabal file.

If you want to use macports, the only real solution is to build a GHC+libs that prefers /opt/local/ to the system-installed locations. The macports GHC does this, or you can try to compile it yourself with appropriate flags to configure (whatever they may be).

John