I'm not sure why but installing GHC 6.10.3 fixed the issue. I was able to 'cabal upgrade' after that. -deech On Thu, May 14, 2009 at 8:45 PM, Andy Stewart wrote:

Hi,

aditya siram writes:

...

Hi all, I'm unable to cabal upgrade with the following error: Resolving dependencies... cabal: dependencies conflict: ghc-6.10.1 requires process ==1.0.1.1 however process-1.0.1.1 was excluded because ghc-6.10.1 requires process ==1.0.1.0

I am currently running ghc 6.10.1 and process 1.0.1.1. It's a bug of Cabal. I think developers will fix this problem in the feature.

Now you can do below step for fix this problem:

1-> execute command "ghc-pkg list" Find same package from two list, and use command "ghc-pkg unregister PackageName --force" remove same pacakge.

2-> execute command "ghc-pkg unregister procss-1.0.1.1 --force"

I think that's okay.

And don't use "cabal upgrade" command until developers fix this problem.

If you want install some package, please use command "cabal install"

-- Andy

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