[Haskell-cafe] Installing wxHaskel on Snow Leopard

[Roman Cheplyaka]

* Eduardo Sato <eduardo.sato at gmail.com> [2013-08-07 14:46:02-0300]
> Hello, guys. Has anybody tried to install wxhaskell on Snow Leopard?
> 
> I followed these instructions: http://www.haskell.org/haskellwiki/WxHaskell/Mac , but got an error: 
> 
> src/haskell/Graphics/UI/WXCore/WxcClassesAL.hs:13085:1:
>     Unacceptable argument type in foreign declaration: CInt
>     When checking declaration:
>       foreign import ccall safe "static wxLogWindow_Create" wxLogWindow_Create
>         :: Ptr (TWindow a)
>            -> CWString -> CBool -> CBool -> IO (Ptr (TLogWindow ()))
> 
> src/haskell/Graphics/UI/WXCore/WxcClassesAL.hs:13085:1:
>     Unacceptable argument type in foreign declaration: CInt
>     When checking declaration:
>       foreign import ccall safe "static wxLogWindow_Create" wxLogWindow_Create
>         :: Ptr (TWindow a)
>            -> CWString -> CBool -> CBool -> IO (Ptr (TLogWindow ()))
> Failed to install wxcore-0.90.0.3
> cabal: Error: some packages failed to install:
> wx-0.90.0.1 depends on wxcore-0.90.0.3 which failed to install.
> wxcore-0.90.0.3 failed during the building phase. The exception was:
> ExitFailure 1
> 
> http://lpaste.net/91634
> 
> I'm using ghc 7.6.3. I've heard the above problems are related to GHC
> 7.6.3 being more pedantic about FFI declarations. Is there any way
> around it?

Indeed, and it has nothing to do with Snow Leopard. You should ensure
that the CInt data constructor is imported. Either patch it yourself, or
have the package maintainer to fix it.

Roman