Sylvain Henry authored Mar 15, 2021 and Marge Bot committed Mar 20, 2021

It seems like I imported "GHC.Types ()" thinking that it would
transitively import GHC.Num.Integer when I wrote that module; but it
doesn't.

This led to build failures.
See https://mail.haskell.org/pipermail/ghc-devs/2021-March/019641.html