[Haskell-cafe] Cabal, sdist and flags

Sean Leather leather at cs.uu.nl
Thu Oct 8 04:59:58 EDT 2009

> To make this work I had to move the 'main-is' outside of the if-else:
>  executable tests
>      main-is: Test.hs
>      hs-source-dirs: test-src src
>      if flag(BuildTests)
>          build-depends: test-framework, test-framework-hunit, HUnit,
> test-framework-quickcheck2, QuickCheck >=
>      else
>          buildable: False
> I found this surprising, so I'm tempted to call it a bug.  A quick
> search didn't tell me whether this is well-known already, hence the
> email.  Would you consider it a bug?  Has it been raised already?

I do something similar with EMGM, but I never tried to put the main-is
inside the if. I just did this for the test executable.

  if flag(test)
    build-depends:      QuickCheck >= 2.1 && < 2.2,
                        HUnit >= 1.2 && < 1.3
    buildable:          False

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