../video/out/mac/common.swift:284:47: error: 'kIOMainPortDefault' is only available in macOS 12.0 or newer
        let srv = IOServiceGetMatchingService(kIOMainPortDefault, IOServiceMatching("AppleLMUController"))
                                              ^
../video/out/mac/common.swift:284:47: note: add 'if #available' version check
        let srv = IOServiceGetMatchingService(kIOMainPortDefault, IOServiceMatching("AppleLMUController"))
                                              ^
../video/out/mac/common.swift:283:10: note: add @available attribute to enclosing instance method
    func initLightSensor() {
         ^
../video/out/mac/common.swift:21:7: note: add @available attribute to enclosing class
class Common: NSObject {
      ^
../video/out/mac/common.swift:290:54: error: 'kIOMainPortDefault' is only available in macOS 12.0 or newer
        lightSensorIOPort = IONotificationPortCreate(kIOMainPortDefault)
                                                     ^
../video/out/mac/common.swift:290:54: note: add 'if #available' version check
        lightSensorIOPort = IONotificationPortCreate(kIOMainPortDefault)