reactive-banana-wx BuildFlags problem when installing (GHC 7, Ubuntu) about reactive-banana HOT 5 CLOSED

Reactive-banana-wx uses a custom Setup.hs to compile the examples.

It appears that you have two conflicting versions of the Cabal library: Cabal-1.10.2.0 and Cabal-1.10.1.0. The first one is used by Setup.hs while the second on is used by your cabal-install utility.

I don't know exactly what's going on, but you may want to try the following commands:

bash$ ghc-pkg hide Cabal-1.10.2.0
bash$ cabal install reactive-banana-wx && ghc-pkg expose Cabal-1.10.2.0

from reactive-banana.

Sadly, that changed nothing. I'll experiment more sometime this weekend...

from reactive-banana.

In that case, I'd like you to ask on the haskell-cafe mailing list or on StackOverlflow; I'm sure that someone there knows the answer.

(Comment no longer relevant, see below)

from reactive-banana.

Ok, I think I know what's going on.

Basically, the packages you installed are a bit messed up. You have two versions of the Cabal library installed and the following dependencies:

Cabal-1.10.2.0  ->  cabal-macosx  ->  Setup.hs
Cabal-1.10.1.0  ->  Setup.hs

To fix this, you have two options:

1. either get rid of Cabal-1.10.2.0 and force a reinstall of cabal-macosx
2. or hide Cabal-1.10.1.0 and reinstall the cabal-install utility, so that it uses the other version

It's hard to give more detailed help in this issue tracker. I recommend that you go on the #haskell IRC channel and ask for help; someone will walk you through the necessary steps.

from reactive-banana.

After trying #2, I went and unregistered Cabal-1.10.2.0 and things progressed further... Thanks for the help!

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