[gnome-builder] flatpak: invalidate build pipeline after package installs

[Christian Hergert <chergert src gnome org>]

commit 71bbe72e50808cfe50ef73235a7666cf8be9a7fc
Author: Christian Hergert <chergert redhat com>
Date:   Fri Mar 10 01:57:29 2017 -0800

    flatpak: invalidate build pipeline after package installs
    
    After we have installed the given package, ensure that the build pipeline
    will be re-setup.

 plugins/flatpak/gbp-flatpak-workbench-addin.c |   12 +++++++++++-
 1 files changed, 11 insertions(+), 1 deletions(-)
---
diff --git a/plugins/flatpak/gbp-flatpak-workbench-addin.c b/plugins/flatpak/gbp-flatpak-workbench-addin.c
index 1ba1692..cd39f0e 100644
--- a/plugins/flatpak/gbp-flatpak-workbench-addin.c
+++ b/plugins/flatpak/gbp-flatpak-workbench-addin.c
@@ -203,7 +203,17 @@ gbp_flatpak_workbench_addin_install_cb (GObject      *object,
     /* TODO: Write to message bar */
     g_warning ("%s", error->message);
   else
-    gtk_widget_hide (GTK_WIDGET (self->message));
+    {
+      IdeContext *context = ide_object_get_context (IDE_OBJECT (manager));
+      IdeConfigurationManager *config_manager = ide_context_get_configuration_manager (context);
+
+      /* TODO: It would be nice to have a cleaner way to re-setup the pipeline
+       *       because we know it is invalidated.
+       */
+      g_signal_emit_by_name (config_manager, "invalidate");
+
+      gtk_widget_hide (GTK_WIDGET (self->message));
+    }
 
   g_simple_action_set_enabled (G_SIMPLE_ACTION (action), TRUE);
 }