While researching DriverKit on macOS and iPadOS, I noticed that .driverKit is listed as a platform in SwiftPM. This led me to believe that Swift is supported. However, when I tried to use Swift in a DriverKit project, it failed with "not found Swift and SwiftOnoneSupport" error.
Is Swift actually available for DriverKit? If so, do I need a non-Xcode toolchain to make it work?