[Haskell-cafe] duplicate definition for symbol

[Daniel Fischer]

Am Freitag 19 Juni 2009 16:06:50 schrieb Henk-Jan van Tuyl:
> L.S.,
>
> I am trying to run a program in GHCi, but I get a meesage that an object  
> file is loaded twice; it appears that two different versions of package  
> "process" are loaded, see the session text below. How can I solve this?

http://www.haskell.org/cabal/FAQ.html#dependencies-conflict

Wow, that one is really common.