[gnome-builder] buildmanager: invalidate pipeline when branch changes

[Christian Hergert <chergert src gnome org>]

commit 479dbd517d9bc9f626ff44ad53fc42082933132e
Author: Christian Hergert <chergert redhat com>
Date:   Sun Mar 18 19:16:13 2018 -0700

    buildmanager: invalidate pipeline when branch changes
    
    When the IdeVcs notifies us that the branch has changed, we
    should invalidate the build pipeline so that we use the new
    build directory.
    
    Fixes #406

 src/libide/buildsystem/ide-build-manager.c | 8 ++++++++
 1 file changed, 8 insertions(+)
---
diff --git a/src/libide/buildsystem/ide-build-manager.c b/src/libide/buildsystem/ide-build-manager.c
index 98f0fc427..5386165aa 100644
--- a/src/libide/buildsystem/ide-build-manager.c
+++ b/src/libide/buildsystem/ide-build-manager.c
@@ -546,6 +546,7 @@ initable_init (GInitable     *initable,
   IdeConfigurationManager *config_manager;
   IdeDeviceManager *device_manager;
   IdeContext *context;
+  IdeVcs *vcs;
 
   IDE_ENTRY;
 
@@ -555,6 +556,7 @@ initable_init (GInitable     *initable,
   context = ide_object_get_context (IDE_OBJECT (self));
   config_manager = ide_context_get_configuration_manager (context);
   device_manager = ide_context_get_device_manager (context);
+  vcs = ide_context_get_vcs (context);
 
   g_signal_connect_object (config_manager,
                            "invalidate",
@@ -568,6 +570,12 @@ initable_init (GInitable     *initable,
                            self,
                            G_CONNECT_SWAPPED);
 
+  g_signal_connect_object (vcs,
+                           "changed",
+                           G_CALLBACK (ide_build_manager_invalidate_pipeline),
+                           self,
+                           G_CONNECT_SWAPPED);
+
   ide_build_manager_invalidate_pipeline (self);
 
   IDE_RETURN (TRUE);