I've not seen such, Mike Izbicki has something related for most of the other standard classes (though i've not looked closely at it myself) http://hackage.haskell.org/package/ConstraintKinds-1.1.0.0 On Mon, Aug 19, 2013 at 6:45 PM, Conal Elliott wrote:

Has anyone given a go at a Category class and friends (including cartesian and closed) with associated constraints (presumably using the ConstraintKinds language extension)? I gave it a try a while back and wasn't able to keep the signatures from getting very complicated.

Thanks, -- Conal

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