I'm trying to follow the guide for creating a virtual device here. My goal was to see the set report print the data (and to eventually create a virtual gamepad and dispatch input reports of button presses). I am on MacOS v15.0 and I have CoreHID.framework linked (not embedded). However, when using the sample code below, HIDVirtualDevice returns nil. import Foundation import CoreHID // This describes a keyboard device according to the Human Interface Devices standard. let keyboardDescriptor: Data = Data([0x05, 0x01, 0x09, 0x06, 0xA1, 0x01, 0x05, 0x07, 0x19, 0xE0, 0x29, 0xE7, 0x15, 0x00, 0x25, 0x01, 0x75, 0x01, 0x95, 0x08, 0x81, 0x02, 0x95, 0x01, 0x75, 0x08, 0x81, 0x01, 0x05, 0x08, 0x19, 0x01, 0x29, 0x05, 0x95, 0x05, 0x75, 0x01, 0x91, 0x02, 0x95, 0x01, 0x75, 0x03, 0x91, 0x01, 0x05, 0x07, 0x19, 0x00, 0x2A, 0xFF, 0x00, 0x95, 0x05, 0x75, 0x08, 0x15, 0x00, 0x26, 0xFF, 0x00, 0x81, 0x00, 0x05, 0xFF, 0x09, 0x03, 0x75, 0x08, 0x95, 0x01, 0x81, 0x02, 0xC0]) let properties = HIDVirtualDevice.Properties(descriptor: keyboardDescriptor, vendorID: 1) let device = HIDVirtualDevice(properties: properties) final class Delegate : HIDVirtualDeviceDelegate { // A handler for system requests to send data to the device. func hidVirtualDevice(_ device: HIDVirtualDevice, receivedSetReportRequestOfType type: HIDReportType, id: HIDReportID?, data: Data) throws { print("Device received a set report request for report type:\(type) id:\(String(describing: id)) with data:[\(data.map { String(format: "%02x", $0) }.joined(separator: " "))]") } // A handler for system requests to query data from the device. func hidVirtualDevice(_ device: HIDVirtualDevice, receivedGetReportRequestOfType type: HIDReportType, id: HIDReportID?, maxSize: size_t) throws -> Data { print("Device received a get report request for report type:\(type) id:\(String(describing: id))") assert(maxSize >= 4) return (Data([1, 2, 3, 4])) } } if (device != nil) { print("Device is ready") await device?.activate(delegate: Delegate()) try await device?.dispatchInputReport(data: Data([5, 6, 7, 8]), timestamp: SuspendingClock.now) } else { print("Device not created") }