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 <co...@conal.net> 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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