feat: kill VMs using quickemu --kill when running quickemu >= 4.9.6

lib/src/pages/manager.dart

@@ -9,6 +9,7 @@ import 'package:flutter_svg/flutter_svg.dart';
 import 'package:gettext_i18n/gettext_i18n.dart';
 import 'package:path/path.dart' as path;
 import 'package:process_run/shell.dart';
+import 'package:version/version.dart';
 
 import '../globals.dart';
 import '../mixins/preferences_mixin.dart';
@@ -337,11 +338,18 @@ class _ManagerState extends State<Manager> with PreferencesMixin {
                               ),
                             ],
                           ),
-                        ).then((result) {
+                        ).then((result) async {
                           result = result ?? false;
                           if (result) {
                             var shell = Shell();
-                            shell.run(['killall', currentVm].join(' '));
+                            // If Quickemu is newer than 4.9.6, use the new --kill option
+                            // which is macOS compatible.
+                            var quickemuVersion = Version.parse(await fetchQuickemuVersion());
+                            if (quickemuVersion >= Version(4, 9, 6)) {
+                              shell.run(['quickemu', '--vm', '$currentVm.conf', '--kill'].join(' '));
+                            } else {
+                              shell.run(['killall', currentVm].join(' '));
+                            }
                             setState(() {
                               _activeVms.remove(currentVm);
                             });

pubspec.lock

@@ -882,6 +882,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.4"
+  version:
+    dependency: "direct main"
+    description:
+      name: version
+      sha256: "3d4140128e6ea10d83da32fef2fa4003fccbf6852217bb854845802f04191f94"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
   vm_service:
     dependency: transitive
     description:

pubspec.lock.json

@@ -1100,6 +1100,16 @@
       "source": "hosted",
       "version": "2.1.4"
     },
+    "version": {
+      "dependency": "direct main",
+      "description": {
+        "name": "version",
+        "sha256": "3d4140128e6ea10d83da32fef2fa4003fccbf6852217bb854845802f04191f94",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "3.0.2"
+    },
     "vm_service": {
       "dependency": "transitive",
       "description": {

pubspec.yaml

@@ -26,6 +26,7 @@ dependencies:
   url_launcher: ^6.3.0
   shared_preferences: ^2.2.3
   tuple: ^2.0.2
+  version: ^3.0.2
   window_size:
     git:
       url: https://github.com/google/flutter-desktop-embedding.git