[Haskell-cafe] how to write cabal package file for executable with unit tests?

Niklas Hambüchen mail at nh2.me
Tue Feb 18 14:30:36 UTC 2014

On 18/02/14 12:57, Richard Cobbe wrote:
> And I'm not sure that I get many of the benefits of thinking about API
> boundaries, because I have to expose modules from the library if I want to
> write unit tests for them, even if they're not really part of the library's
> public interface.

Exactly that has bothered me for long.

If I want to make a proper cabal package with tests for internal API, I
have to expose the internal API (otherwise we get double building).

In general, I always recommend exposing all the code in .Internal
modules - I often run into problems with packages that don't do this.

Yet, the whole re-exporting overhead introduced by this is cumbersome,
and it doesn't make haddocks nicer either (e.g. when you come to a page
that is full of re-exports). I hope haddock will find a way to make this

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