More info on the extension they referenced here: https://ghc.gitlab.haskell.org/ghc/doc/users_guide/exts/control.html#extension-GHC2021 https://ghc.gitlab.haske

More info on the extension they referenced here: https://ghc.gitlab.haskell.org/ghc/doc/users_guide/exts/control.html#extension-GHC2021 https://ghc.gitlab.haskell.org/ghc/doc/users_guide/exts/cont... But basically it's a meta-extension that flips on a bunch of extensions that most haskell users would come to expect as 'default'. As a simple example: TupleSections. If the compiler complained to me that I needed to turn on TupleSections, I wouldn't take a minute to consider whether it was a good idea, I'd just be annoyed that I hadn't flipped it on somewhere already.