[Haskell-cafe] Tasty not compiling

Roman Cheplyaka roma at ro-che.info
Fri Aug 30 09:13:06 CEST 2013

* Thiago Negri <evohunz at gmail.com> [2013-08-29 22:27:47-0300]
> I can't install tasty with cabal. Anyone with the same issue or a fix?
> $ cabal install tasty
> ...
> Test\Tasty\Core.hs:147:11: Not in scope: `witness'

You probably have a too old version of 'tagged'. I'll add the lower
version bound on it. Meanwhile, just do

  cabal install tasty --constraint 'tagged >=0.5'

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