cabal-doctest support for .hsc files? about cabal-doctest HOT 11 CLOSED

Do you have a (public) package where this is a problem.

Is it correct that GHC invokes hsc2hs for hsc files, or is it cabal which knows how to preprocess them. What's about .chs and .c2hs?

If cabal does the preprocessing, than I hope this isn't hard (but not easy either) to fix in cabal-doctest.

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I originally encountered this in quine, which had a Setup.hs shim for doctests and a .hsc file at the same time. It turned out that quine doesn't even use doctests at all internally, so I eventually decided to just remove the custom Setup.hs script, but if quine had been using doctests, we'd have been in trouble.

GHC has no knowledge of hsc2hs or c2hs whatsoever—it's Cabal that invokes those preprocessors on .hsc or .chs files before compiling them.

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Ok, then maybe Cabal already does preprocessing, and I just have to find where the results are. I'll check next week. Today I'll try to not to do anything, especially fool myself :)

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I have run into the same issue. I wanted to use this library precisely because I was having trouble doctesting my hsc2hs-base code. It would be really great if you could add support for that use case.

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@peti do you have a public repository, where I could test that cabal-doctest actually works with real world package?

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@peti, are you using stack, could you test a branch in #14 if it works for you?

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@phadej, I created https://github.com/peti/hsyslog/tree/t/cabal-doctest-support in my hsyslog project to hsc2hs support. I run the build with cabal-install. I usually don't use stack.

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I tried #14 with cabal-install and it works fine!

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@peti Great, I'll cut new release shortly.

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https://hackage.haskell.org/package/cabal-doctest-1.0.2 on Hackage.

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Thank you very much for you efforts!

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