[gnome-builder] gui: rescan plugins after enabling python3 loader

[Christian Hergert <chergert src gnome org>]

commit e70b852da009210c5d832f981f67d3d97eccf94f
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jan 24 11:53:14 2019 -0800

    gui: rescan plugins after enabling python3 loader

 src/libide/gui/ide-application-plugins.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/libide/gui/ide-application-plugins.c b/src/libide/gui/ide-application-plugins.c
index b072a06ca..9cdbe63f2 100644
--- a/src/libide/gui/ide-application-plugins.c
+++ b/src/libide/gui/ide-application-plugins.c
@@ -379,6 +379,8 @@ _ide_application_load_plugins (IdeApplication *self)
   else
     peas_engine_enable_loader (engine, "python3");
 
+  peas_engine_rescan_plugins (engine);
+
   plugins = peas_engine_get_plugin_list (engine);
 
   for (const GList *iter = plugins; iter; iter = iter->next)