[gnome-boxes] app: Asynchronously setup non-default sources

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 4db7e474872197e65e896bd9f9f5d5d8c9ec468d
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Wed May 13 22:49:03 2015 +0100

    app: Asynchronously setup non-default sources
    
    In case of remote sources, we do not know how long they can take and it
    has been reported that at least in case of libvirt sources, Boxes can
    hang on startup for a long time if such sources are unreachable.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=700238

 src/app.vala |   23 ++++++++++++++++++++---
 1 files changed, 20 insertions(+), 3 deletions(-)
---
diff --git a/src/app.vala b/src/app.vala
index cee6500..b3f8a38 100644
--- a/src/app.vala
+++ b/src/app.vala
@@ -161,10 +161,12 @@ private class Boxes.App: Gtk.Application {
         var window = add_new_window ();
         window.set_state (UIState.COLLECTION);
 
-        setup_sources.begin ((obj, result) => {
-            setup_sources.end (result);
+        setup_default_source.begin ((obj, result) => {
+            setup_default_source.end (result);
             is_ready = true;
             ready ();
+
+            setup_sources.begin ();
         });
     }
 
@@ -382,7 +384,7 @@ private class Boxes.App: Gtk.Application {
         }
     }
 
-    private async void setup_sources () {
+    private async void setup_default_source () {
         var path = get_user_pkgconfig_source (DEFAULT_SOURCE_NAME);
         var create_session_source = true;
         try {
@@ -406,9 +408,24 @@ private class Boxes.App: Gtk.Application {
             }
         }
 
+        try {
+            var source = new CollectionSource.with_file (DEFAULT_SOURCE_NAME);
+            yield add_collection_source (source);
+        } catch (GLib.Error error) {
+            printerr ("Error setting up default broker: %s\n", error.message);
+            release (); // will end application
+        }
+
+        assert (default_connection != null);
+    }
+
+    private async void setup_sources () {
         var dir = File.new_for_path (get_user_pkgconfig_source ());
         var new_sources = new GLib.List<CollectionSource> ();
         yield foreach_filename_from_dir (dir, (filename) => {
+            if (filename == DEFAULT_SOURCE_NAME)
+                return false;
+
             var source = new CollectionSource.with_file (filename);
             new_sources.append (source);
             return false;