Use Mac-specific input devices when possible (#524)

* Use VZMacKeyboardConfiguration when possible

* Use VZMacTrackpadConfiguration when possible

Sources/tart/Platform/Darwin.swift

@@ -98,11 +98,17 @@ struct Darwin: Platform {
     return result
   }
 
+  func keyboards() -> [VZKeyboardConfiguration] {
+    if #available(macOS 14, *) {
+      return [VZMacKeyboardConfiguration()]
+    } else {
+      return [VZUSBKeyboardConfiguration()]
+    }
+  }
+
   func pointingDevices() -> [VZPointingDeviceConfiguration] {
     if #available(macOS 13, *) {
-      // Trackpad is only supported starting with macOS Ventura
-      // macOS Monterey will continue using a USB device == .darwin 
-      return [VZMacTrackpadConfiguration(), VZUSBScreenCoordinatePointingDeviceConfiguration()]
+      return [VZMacTrackpadConfiguration()]
     } else {
       return [VZUSBScreenCoordinatePointingDeviceConfiguration()]
     }

Sources/tart/Platform/Linux.swift

@@ -31,6 +31,10 @@ struct Linux: Platform {
     return result
   }
 
+  func keyboards() -> [VZKeyboardConfiguration] {
+    [VZUSBKeyboardConfiguration()]
+  }
+
   func pointingDevices() -> [VZPointingDeviceConfiguration] {
     [VZUSBScreenCoordinatePointingDeviceConfiguration()]
   }

Sources/tart/Platform/Platform.swift

@@ -5,5 +5,6 @@ protocol Platform: Codable {
   func bootLoader(nvramURL: URL) throws -> VZBootLoader
   func platform(nvramURL: URL) throws -> VZPlatformConfiguration
   func graphicsDevice(vmConfig: VMConfig) -> VZGraphicsDeviceConfiguration
+  func keyboards() -> [VZKeyboardConfiguration]
   func pointingDevices() -> [VZPointingDeviceConfiguration]
 }

Sources/tart/VM.swift

@@ -292,7 +292,7 @@ class VM: NSObject, VZVirtualMachineDelegate, ObservableObject {
     configuration.audioDevices = [soundDeviceConfiguration]
 
     // Keyboard and mouse
-    configuration.keyboards = [VZUSBKeyboardConfiguration()]
+    configuration.keyboards = vmConfig.platform.keyboards()
     configuration.pointingDevices = vmConfig.platform.pointingDevices()
 
     // Networking