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GHC improvements #7

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L-as opened this issue Jun 25, 2022 · 2 comments
Open

GHC improvements #7

L-as opened this issue Jun 25, 2022 · 2 comments

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@L-as
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L-as commented Jun 25, 2022 •
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Definite improvement:
[ ] https://gitlab.haskell.org/ghc/ghc/-/issues/21702 (useful for deriving)
[ ] Warnings for OVERLAPPING and OVERLAPS.
[ ] Warnings for incoherent usage of OVERLAPPABLE instances.
[ ] Warnings for orphan flexible instances.
[ ] https://gitlab.haskell.org/ghc/ghc/-/issues/21782
[ ] Quantified constraints that work with type families
[ ] Generalised singletons (no proposal written-up)
[ ] Expand metavar x :: a when kind allows only one constructor, needed to replace ConstructNPFromVars stuff that also really fucks up compile-time performance
[x] Monadic viewpatterns replaced by https://github.com/JakobBruenker/monadic-bang
[ ] More powerful generics
@MangoIV
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MangoIV commented Jul 10, 2022

For partially applied type families look here:
https://hackage.haskell.org/package/first-class-families

@L-as
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L-as commented Jul 10, 2022

That is not a solution that is better than what we have now...

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@L-as @MangoIV