Hi,

While the impact seems low, some relatively trivial MonadFail instances seem to be missing still, including: Option, First, Last, Proxy, WrappedMonad. Also the non-base containers:Seq. These were not specifically discussed either [1].

Thoughts? Any other things that are still overlooked?


-- lennart

[1] https://prime.haskell.org/wiki/Libraries/Proposals/MonadFail#Discussion

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