Do not export ExtensionManager extension

Author: loop8ack

src/ExtensionManager.Vsix.Shared/ExtensionManager.Vsix.Shared.projitems

@@ -11,6 +11,7 @@
   <ItemGroup>
     <Compile Include="$(MSBuildThisFileDirectory)ExtensionManagerPackage.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)ThisVsixInfo.cs" />
   </ItemGroup>
   <ItemGroup>
     <Folder Include="$(MSBuildThisFileDirectory)Properties\" />

src/ExtensionManager.Vsix.Shared/ExtensionManagerPackage.cs

@@ -42,7 +42,7 @@ protected override async Task InitializeAsync(CancellationToken cancellationToke
     {
         var services = new ServiceCollection()
             .ConfigureVSFacade(await CreateVSServiceFactoryAsync())
-            .ConfigureExtensionManager()
+            .ConfigureExtensionManager(new ThisVsixInfo())
             .BuildServiceProvider();
 
         var solutions = services.GetRequiredService<IVSSolutions>();

src/ExtensionManager.Vsix.Shared/ThisVsixInfo.cs

@@ -0,0 +1,12 @@
+namespace ExtensionManager;
+
+public sealed class ThisVsixInfo : IThisVsixInfo
+{
+    public string Id => Vsix.Id;
+    public string Name => Vsix.Name;
+    public string Description => Vsix.Description;
+    public string Language => Vsix.Language;
+    public string Version => Vsix.Version;
+    public string Author => Vsix.Author;
+    public string Tags => Vsix.Tags;
+}

src/ExtensionManager/Features/Export/ExportFeatureBase.cs

@@ -6,7 +6,6 @@
 using ExtensionManager.Manifest;
 using ExtensionManager.UI;
 using ExtensionManager.UI.Worker;
-using ExtensionManager.VisualStudio;
 using ExtensionManager.VisualStudio.Documents;
 using ExtensionManager.VisualStudio.Extensions;
 using ExtensionManager.VisualStudio.MessageBox;
@@ -17,14 +16,16 @@ public abstract class ExportFeatureBase : IFeature, IExportWorker
 {
     public sealed class Args
     {
+        public IThisVsixInfo VsixInfo { get; }
         public IVSDocuments Documents { get; }
         public IVSMessageBox MessageBox { get; }
         public IVSExtensions Extensions { get; }
         public IDialogService DialogService { get; }
         public IManifestService ManifestService { get; }
 
-        public Args(IVSDocuments documents, IVSMessageBox messageBox, IVSExtensions extensions, IDialogService dialogService, IManifestService manifestService)
+        public Args(IThisVsixInfo vsixInfo, IVSDocuments documents, IVSMessageBox messageBox, IVSExtensions extensions, IDialogService dialogService, IManifestService manifestService)
         {
+            VsixInfo = vsixInfo;
             Documents = documents;
             MessageBox = messageBox;
             Extensions = extensions;
@@ -35,6 +36,7 @@ public Args(IVSDocuments documents, IVSMessageBox messageBox, IVSExtensions exte
 
     private readonly Args _args;
 
+    protected IThisVsixInfo VsixInfo => _args.VsixInfo;
     protected IVSDocuments Documents => _args.Documents;
     protected IVSMessageBox MessageBox => _args.MessageBox;
     protected IVSExtensions Extensions => _args.Extensions;
@@ -50,6 +52,8 @@ public async Task ExecuteAsync()
     {
         var manifest = ManifestService.CreateNew();
         var installedExtensions = await Extensions.GetInstalledExtensionsAsync().ConfigureAwait(false);
+        
+        installedExtensions.RemoveAll(vsix => vsix.Id == VsixInfo.Id);
 
         await ShowExportDialogAsync(manifest, this, installedExtensions);
     }

src/ExtensionManager/Features/VisualStudioExtensions.cs

@@ -13,14 +13,14 @@ namespace ExtensionManager.Features;
 
 internal static class VisualStudioExtensions
 {
-    public static async Task<IReadOnlyCollection<IVSExtension>> GetInstalledExtensionsAsync(this IVSExtensions extensions)
+    public static async Task<List<IVSExtension>> GetInstalledExtensionsAsync(this IVSExtensions extensions)
     {
         var installedIds = await extensions.GetInstalledExtensionIdsAsync().ConfigureAwait(false);
 
         // Filter the installed extensions to only be the ones that exist on the Marketplace
         return (await extensions.GetGalleryExtensionsAsync(installedIds).ConfigureAwait(false))
             .OrderBy(e => e.Name)
-            .ToArray();
+            .ToList();
     }
 
     public static async Task<string?> GetCurrentSolutionExtensionsManifestFilePathAsync(this IVSSolutions solutions, IVSMessageBox messageBox)

src/ExtensionManager/IThisVsixInfo.cs

@@ -0,0 +1,12 @@
+namespace ExtensionManager;
+
+public interface IThisVsixInfo
+{
+    string Id { get; }
+    string Name { get; }
+    string Description { get; }
+    string Language { get; }
+    string Version { get; }
+    string Author { get; }
+    string Tags { get; }
+}

src/ExtensionManager/ServiceCollectionExtensions.cs

@@ -10,11 +10,12 @@ namespace ExtensionManager;
 
 public static class ServiceCollectionExtensions
 {
-    public static IServiceCollection ConfigureExtensionManager(this IServiceCollection services)
+    public static IServiceCollection ConfigureExtensionManager(this IServiceCollection services, IThisVsixInfo thisVsixInfo)
     {
         return services
             .AddDialogService()
             .AddManifestService()
+            .AddSingleton(thisVsixInfo)
             .AddTransient<ExportFeatureBase.Args>()
             .AddTransient<InstallFeatureBase.Args>()
             .AddTransient<IFeatureExecutor, FeatureExecutor>()