Apparently everything is an error in Swift 6.
So what's the “fix" for this? My understanding is that static let is thread safe, unless that has changed? Do I just mark the entire class “nonisolated(unsafe)”?
Swift 7: Mutability is bad, you must annotate any vars with unsafe(badprogrammer).
Swift 8: OO/procedural languages are too error prone, all new code must be purely functional. Don't worry there'll be plenty of WWDC sections on lambda calculus.