Re: Error accessing data files from package code in Cabal: Unkown symbol

On Tue, 2008-07-01 at 14:10 -0500, Alfonso Acosta wrote:

On Tue, Jul 1, 2008 at 1:26 PM, Don Stewart wrote:

...

Probably you've not listed the Paths_ForSyDe module in your module exports in the .cabal file?

Thanks, that was the problem.

Since Paths_pkgname is somehow a special module, I stupidly assumed that cabal would take care of exporting it under the hood. I hope that the directory where the Paths_pkgname is included (dist/build/autogen ) doesn't change in the future.

Do not hard code the path. It can change (via a command line flag). It's not necessary to hard code anything anyway, just using: other-modules: Paths_ForSyDe will work fine (because the $dist/build/autogen path is on the sources search path) I suggest using other-modules rather than exposed-modules because you probably do not need to make that module part of your public api.

Either way, I think it would be a good idea to include a comment about it in the Cabal documentation (http://www.haskell.org/cabal/release/latest/doc/users-guide/authors.html#pat... ).

Right. Duncan