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@phadej phadej commented Jun 17, 2022

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@phadej phadej changed the title Add instances for (:~~:) Squash of stuff Jun 17, 2022
phadej and others added 6 commits June 17, 2022 15:18
Also modify GRead instance for :~: and :~~:
`GShow t` is isomorphic to `forall a. Show (t a)`, but we don't need the
quantified constraint to write a function to be used to define the
method.

The more specific type should make a nicer error if one didn't derive
the necessary polymorphic `Show` instance.
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2 participants