Pop up a dialog when we're unable to install/uninstall a nuget package.

src/VisualStudio/Core/Def/Packaging/PackageInstallerServiceFactory.cs

@@ -12,6 +12,7 @@
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.Editor.Shared.Utilities;
 using Microsoft.CodeAnalysis.Host.Mef;
+using Microsoft.CodeAnalysis.Notification;
 using Microsoft.CodeAnalysis.Packaging;
 using Microsoft.CodeAnalysis.Shared.Utilities;
 using Microsoft.CodeAnalysis.Text;
@@ -195,6 +196,12 @@ private void OnSourceProviderSourcesChanged(object sender, EventArgs e)
             catch (Exception e)
             {
                 dte.StatusBar.Text = string.Format(ServicesVSResources.Package_install_failed_0, e.Message);
+
+                var notificationService = _workspace.Services.GetService<INotificationService>();
+                notificationService?.SendNotification(
+                    string.Format(ServicesVSResources.Installing_0_failed_Additional_information_1, packageName, e.Message),
+                    severity: NotificationSeverity.Error);
+
                 // fall through.
             }
 
@@ -230,6 +237,12 @@ private static string GetStatusBarText(string packageName, string installedVersi
             catch (Exception e)
             {
                 dte.StatusBar.Text = string.Format(ServicesVSResources.Package_uninstall_failed_0, e.Message);
+
+                var notificationService = _workspace.Services.GetService<INotificationService>();
+                notificationService?.SendNotification(
+                    string.Format(ServicesVSResources.Uninstalling_0_failed_Additional_information_1, packageName, e.Message),
+                    severity: NotificationSeverity.Error);
+
                 // fall through.
             }
 

src/VisualStudio/Core/Def/ServicesVSResources.Designer.cs

@@ -555,6 +555,17 @@ internal class ServicesVSResources {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Installing &apos;{0}&apos; failed.
+        ///
+        ///Additional information: {1}.
+        /// </summary>
+        internal static string Installing_0_failed_Additional_information_1 {
+            get {
+                return ResourceManager.GetString("Installing_0_failed_Additional_information_1", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Interface name conflicts with an existing type name..
         /// </summary>
@@ -1200,6 +1211,17 @@ internal class ServicesVSResources {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Uninstalling &apos;{0}&apos; failed.
+        ///
+        ///Additional information: {1}.
+        /// </summary>
+        internal static string Uninstalling_0_failed_Additional_information_1 {
+            get {
+                return ResourceManager.GetString("Uninstalling_0_failed_Additional_information_1", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to &lt;Unknown&gt;.
         /// </summary>

src/VisualStudio/Core/Def/ServicesVSResources.resx

@@ -537,4 +537,14 @@ Use the dropdown to view and switch to other projects this file may belong to.</
   <data name="Package_uninstall_failed_0" xml:space="preserve">
     <value>Package uninstall failed: {0}</value>
   </data>
+  <data name="Installing_0_failed_Additional_information_1" xml:space="preserve">
+    <value>Installing '{0}' failed.
+
+Additional information: {1}</value>
+  </data>
+  <data name="Uninstalling_0_failed_Additional_information_1" xml:space="preserve">
+    <value>Uninstalling '{0}' failed.
+
+Additional information: {1}</value>
+  </data>
 </root>
\ No newline at end of file