Add instance MonadFail (f :*: g)

[Edward Kmett]

Works for me. +1

On Sun, Aug 11, 2019 at 12:38 PM Dannyu NDos <ndospark320 at gmail.com> wrote:

> instance (MonadFail f, MonadFail g) => MonadFail (f :*: g) where
>     fail s = fail s :*: fail s
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