Problem with a second installed version of the syb package

Ian Lynagh igloo at
Fri Mar 20 19:39:30 EDT 2009

On Fri, Mar 20, 2009 at 09:33:07AM +0100, José Pedro Magalhães wrote:
>     Bad interface file: C:\Program Files
> (x86)\Haskell\syb-\ghc-6.10.1\Data\Generics.hi
>         Something is amiss; requested module  syb:Data.Generics differs from
> name found in the interface file syb-
> Failed, modules loaded: none.
> What is the problem here?

What does

ghc --show-iface "C:\Program Files (x86)\Haskell\syb-\ghc-6.10.1\Data\Generics.hi"


Also, if you add -v to the commandline that is going wrong then what
does it say that syb is being mapped to?


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