Proposal: export liftA2 from Prelude

[David Feuer]

I'm very much in favor (as will surprise no one), but there's a new
proposal process. Open an issue at
https://github.com/haskell/core-libraries-committee/issues

On Fri, Jan 14, 2022, 2:06 AM Andreas Abel <andreas.abel at ifi.lmu.de> wrote:

> Proposal: export liftA2 from Prelude.
> More information and discussion here:
>
>    https://gitlab.haskell.org/ghc/ghc/-/issues/20945
>
> Discussion period 2 weeks
>
> TL;DR
>
> - Fixes weird qualification in warning
>
>      • No explicit implementation for
>          either ‘<*>’ or ‘GHC.Base.liftA2’
>      • In the instance declaration for ‘Applicative <Foo>’
>
> - Was considered for GHC 8.2 but never followed up
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