refactor: Use `MonadValidate` for parsing.

TokTok / hs-msgpack-types

Abstract data types and type classes for Haskell to MessagePack value converters

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Closed iphydf closed 2 years ago

iphydf commented 2 years ago

MonadFail is not defined well on Either, making it not terribly useful. Also, MonadValidate allows us to collect multiple error messages.

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