[Haskell] Composing applicative functors?

Conal Elliott conal at conal.net
Wed Feb 21 19:23:50 EST 2007

Is the composition instance of Control.Applicative defined somewhere?  I see
it in the McBride & Paterson paper [1], but not in the library docs [2].
I'd rather pull it in from a library than (re)define it myself.

[1] http://www.soi.city.ac.uk/~ross/papers/Applicative.pdf
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