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Further simplify instances to avoid overkill *1 classes #217

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Ericson2314 opened this issue Jun 26, 2022 · 0 comments

Ericson2314 commented Jun 26, 2022 •

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free/src/Control/Monad/Free.hs

Line 148 in ca7982b

instance (Eq1 f, Eq a) => Eq (Free f a) where

For example I think could be

deriving instance (Eq a, Eq (f (Free f a))) => Eq (Free f a)

And even prior to quantified constraints, the solver can coinductively solve such constraints.

Ericson2314 mentioned this issue

Simplify the Eq/Ord instances for FT #216

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