On Fri, Feb 14, 2014 at 8:59 AM, Daniil Frumin <difrumin@gmail.com> wrote:
But the users still need to have alex and happy libraries installed,
do not they?

They somewhat infamously do not have libraries. (Infamously because this means nothing registered with ghc-pkg, so cabal can't tell if they're installed or not.)

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