[Haskell-cafe] ghc package problem

[Daniel Fischer]

Am Freitag 16 April 2010 15:06:55 schrieb Phyx:
> I'm using cabal install,
>
> $ ghc --make -O2 WinDll
>
> WinDll\Lib\NativeMapping.hs:51:18:
>     Could not find module `Language.Haskell.Exts':
>       Use -v to see a list of the files searched for.
>
> Is the error message I get when I try to just compile it normally
> While
>
> $ ghc-pkg find-module "Language.Haskell.Exts"
> C:/msys/1.0/local\lib\package.conf.d:
>
> C:\Users\Phyx\AppData\Roaming\ghc\i386-mingw32-6.13.20100320\package.con
>f.d: haskell-src-exts-1.9.0
>
> So it should be able to find it.

Indeed.

What's the result of compiling

module Main (main) where

import Language.Haskell.Exts

main :: IO ()
main = print $ readExtensions "BangPatterns"

? If that works, it's probably an issue with your tool, otherwise it's 
haskell-src-exts or GHC.

>
> I'm using a snapshot of GHC 6.13
>
> $ ghc -v
> Glasgow Haskell Compiler, Version 6.13.20100320, for Haskell 98, stage 2
> booted by GHC version 6.12.1
>
> And
>
> $ cabal -V
> cabal-install version 0.9.0
> using version 1.9.0 of the Cabal library
>
> I know 6.13 isn't out yet, But don't think they touched the packaging
> part much.
>

Unlikely, but one never knows. Have you still an older GHC around you could 
try?