https://gist.github.com/pixelspark/f4f34a257d84611e7204b646dfb4b3c2 https://gist.github.com/pixelspark/f4f34a257d84611e7204b646d... Real-world use: https://git

https://gist.github.com/pixelspark/f4f34a257d84611e7204b646dfb4b3c2 https://gist.github.com/pixelspark/f4f34a257d84611e7204b646d... Real-world use: https://github.com/pixelspark/warp/blob/dcf57462bd400df6d067e582351f2b05e262b2fd/WarpCore/Sources/Concurrency.swift#L135 https://github.com/pixelspark/warp/blob/dcf57462bd400df6d067... (the typealias thing is a bit weird here, I agree - it also doesn't crash without it. Nevertheless this compiled fine on 3.0 and should show a nice error, not require me to leave out every other file from the build to find out where it goes wrong, then bisect that file to find out which line causes it)