[Haskell-beginners] Profiling install error

[blackcat at pro-ns.net]

 I'm trying to install the profiling version of the base libraries on 
 Fedora 15.  I set the profiling options in ~/.cabal/config then tried to 
 reinstall but I get

 %cabal install base --reinstall
 Resolving dependencies...
 cabal: internal error: impossible

 Is there anything I can do now?