feat: add check and warning for Wayland session

lib/loading/cubit/loading_cubit.dart

@@ -1,7 +1,11 @@
+import 'dart:io';
+
 import 'package:equatable/equatable.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 
+import '../../logs/logs.dart';
 import '../../native_platform/native_platform.dart';
+import '../../native_platform/src/linux/linux.dart';
 
 part 'loading_state.dart';
 
@@ -10,13 +14,29 @@ class LoadingCubit extends Cubit<LoadingState> {
 
   LoadingCubit()
       : nativePlatform = NativePlatform(),
-        super(LoadingInitial()) {
+        super(const LoadingInitial()) {
     checkDependencies();
   }
 
   Future<void> checkDependencies() async {
+    log.v('Checking dependencies..');
+
+    // Make sure we are not running under Wayland.
+    if (Platform.isLinux) {
+      final sessionType = await (nativePlatform as Linux).sessionType();
+      if (sessionType != 'x11') {
+        emit(const LoadingWaylandError());
+        return;
+      }
+    }
+
     final dependenciesSatisfied = await nativePlatform.checkDependencies();
-    final newState = dependenciesSatisfied ? LoadingSuccess() : LoadingFailed();
+
+    LoadingState newState;
+    newState = (dependenciesSatisfied) //
+        ? const LoadingSuccess()
+        : const LoadingDependencyError();
+
     emit(newState);
   }
 }

lib/loading/cubit/loading_state.dart

@@ -7,8 +7,44 @@ abstract class LoadingState extends Equatable {
   List<Object> get props => [];
 }
 
-class LoadingInitial extends LoadingState {}
+class LoadingInitial extends LoadingState {
+  const LoadingInitial();
+}
+
+class LoadingSuccess extends LoadingState {
+  const LoadingSuccess();
+}
+
+class LoadingError extends LoadingState {
+  final String errorMsg;
 
-class LoadingSuccess extends LoadingState {}
+  const LoadingError({
+    required this.errorMsg,
+  });
+
+  @override
+  List<Object> get props => [errorMsg];
+}
 
-class LoadingFailed extends LoadingState {}
+class LoadingDependencyError extends LoadingError {
+  const LoadingDependencyError()
+      : super(
+          errorMsg: '''
+Dependency check failed.
+
+Install the dependencies from your system's package manager:
+
+- `xdotool`
+- `wmctrl`''',
+        );
+}
+
+class LoadingWaylandError extends LoadingError {
+  const LoadingWaylandError()
+      : super(
+          errorMsg: '''
+Wayland is not currently supported.
+
+[Sign in using X11 instead](https://docs.fedoraproject.org/en-US/quick-docs/configuring-xorg-as-default-gnome-session/).''',
+        );
+}

lib/loading/loading_page.dart

@@ -3,6 +3,8 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_markdown/flutter_markdown.dart';
 
 import '../../apps_list/apps_list.dart';
+import '../app/app.dart';
+import '../logs/logs.dart';
 import 'loading.dart';
 
 /// Intermediate loading screen while verifying that Nyrna's dependencies are
@@ -26,18 +28,21 @@ class LoadingPage extends StatelessWidget {
               }
             },
             builder: (context, state) {
-              if (state is LoadingFailed) {
+              if (state is LoadingError) {
                 return Card(
                   child: Container(
                     padding: const EdgeInsets.all(20.0),
-                    child: const MarkdownBody(data: '''
-Dependency check failed.
+                    child: MarkdownBody(
+                      data: state.errorMsg,
+                      onTapLink: (text, href, title) {
+                        if (href == null) {
+                          log.e('Broken link: $href');
+                          return;
+                        }
 
-Install the dependencies from your system's package manager:
-
-- `xdotool`
-- `wmctrl`
-                        '''),
+                        AppCubit.instance.launchURL(href);
+                      },
+                    ),
                   ),
                 );
               } else {

lib/native_platform/src/linux/linux.dart

@@ -1,3 +1,5 @@
+import 'dart:io' as io;
+
 import '../../../logs/logs.dart';
 import '../native_platform.dart';
 import '../process/models/process.dart';
@@ -169,6 +171,13 @@ Make sure these are installed on your host system.''',
     return dependenciesAvailable;
   }
 
+  /// Return is `x11` or `wayland` depending on which session type is running.
+  Future<String> sessionType() async {
+    final sessionType = io.Platform.environment['XDG_SESSION_TYPE'];
+    log.v('Current session type: $sessionType');
+    return sessionType!;
+  }
+
   @override
   Future<bool> minimizeWindow(int windowId) async {
     log.v('Minimizing window with id $windowId');

pubspec.lock

@@ -409,7 +409,7 @@ packages:
       name: mime
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.3"
+    version: "1.0.4"
   mocktail:
     dependency: "direct dev"
     description:
@@ -542,7 +542,7 @@ packages:
       name: path_provider_macos
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.6"
+    version: "2.0.7"
   path_provider_platform_interface:
     dependency: transitive
     description:
@@ -626,18 +626,18 @@ packages:
       name: shared_preferences
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.15"
+    version: "2.0.16"
   shared_preferences_android:
     dependency: transitive
     description:
       name: shared_preferences_android
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.14"
-  shared_preferences_ios:
+  shared_preferences_foundation:
     dependency: transitive
     description:
-      name: shared_preferences_ios
+      name: shared_preferences_foundation
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.1"
@@ -648,13 +648,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.2"
-  shared_preferences_macos:
-    dependency: transitive
-    description:
-      name: shared_preferences_macos
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.5"
   shared_preferences_platform_interface:
     dependency: transitive
     description:
@@ -897,7 +890,7 @@ packages:
       name: web_socket_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.2.0"
+    version: "2.3.0"
   webdriver:
     dependency: transitive
     description:
@@ -948,7 +941,7 @@ packages:
       name: xdg_directories
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.0+2"
+    version: "0.2.0+3"
   xml:
     dependency: transitive
     description: