Add support pasting clipboard from host for Linux VMs (#806)

* Added partial support pasting clipboard from host (only for Linux VMs)

* Added option "--no-clipboard" to run command

Sources/tart/Commands/Run.swift

@@ -40,6 +40,11 @@ struct Run: AsyncParsableCommand {
   @Flag(help: "Disable audio pass-through to host.")
   var noAudio: Bool = false
 
+  @Flag(help: ArgumentHelp(
+    "Disable clipboard sharing between host and guest.",
+    discussion: "Only works with Linux-based guest operating systems."))
+  var noClipboard: Bool = false
+
   #if arch(arm64)
     @Flag(help: "Boot into recovery mode")
   #endif
@@ -231,7 +236,8 @@ struct Run: AsyncParsableCommand {
       directorySharingDevices: directoryShares() + rosettaDirectoryShare(),
       serialPorts: serialPorts,
       suspendable: suspendable,
-      audio: !noAudio
+      audio: !noAudio,
+      clipboard: !noClipboard
     )
 
     let vncImpl: VNC? = try {

Sources/tart/VM.swift

@@ -47,7 +47,8 @@ class VM: NSObject, VZVirtualMachineDelegate, ObservableObject {
        directorySharingDevices: [VZDirectorySharingDeviceConfiguration] = [],
        serialPorts: [VZSerialPortConfiguration] = [],
        suspendable: Bool = false,
-       audio: Bool = true
+       audio: Bool = true,
+       clipboard: Bool = true
   ) throws {
     name = vmDir.name
     config = try VMConfig.init(fromURL: vmDir.configURL)
@@ -64,7 +65,8 @@ class VM: NSObject, VZVirtualMachineDelegate, ObservableObject {
                                                 directorySharingDevices: directorySharingDevices,
                                                 serialPorts: serialPorts,
                                                 suspendable: suspendable,
-                                                audio: audio
+                                                audio: audio,
+                                                clipboard: clipboard
     )
     virtualMachine = VZVirtualMachine(configuration: configuration)
 
@@ -291,7 +293,8 @@ class VM: NSObject, VZVirtualMachineDelegate, ObservableObject {
     directorySharingDevices: [VZDirectorySharingDeviceConfiguration],
     serialPorts: [VZSerialPortConfiguration],
     suspendable: Bool = false,
-    audio: Bool = true
+    audio: Bool = true,
+    clipboard: Bool = true
   ) throws -> VZVirtualMachineConfiguration {
     let configuration = VZVirtualMachineConfiguration()
 
@@ -336,6 +339,16 @@ class VM: NSObject, VZVirtualMachineDelegate, ObservableObject {
       return vio
     }
 
+    // Clipboard sharing via Spice agent
+    if clipboard && vmConfig.os == .linux {
+      let spiceAgentConsoleDevice = VZVirtioConsoleDeviceConfiguration()
+      let spiceAgentPort = VZVirtioConsolePortConfiguration()
+      spiceAgentPort.name = VZSpiceAgentPortAttachment.spiceAgentPortName
+      spiceAgentPort.attachment = VZSpiceAgentPortAttachment()
+      spiceAgentConsoleDevice.ports[0] = spiceAgentPort
+      configuration.consoleDevices.append(spiceAgentConsoleDevice)
+    }
+
     // Storage
     let attachment: VZDiskImageStorageDeviceAttachment = vmConfig.os == .linux ?
       // Use "cached" caching mode for virtio drive to prevent fs corruption on linux