[gnome-builder] buildui: add tracing when build is started

[Christian Hergert <chergert src gnome org>]

commit 22ca7ce9bd8c942efabe8cdd1c27ddd592d8cfb2
Author: Christian Hergert <chergert redhat com>
Date:   Mon Dec 2 10:58:15 2019 -0800

    buildui: add tracing when build is started
    
    This is mildly useful when tracking down why the panel has
    changed or was presented.

 src/plugins/buildui/gbp-buildui-workspace-addin.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)
---
diff --git a/src/plugins/buildui/gbp-buildui-workspace-addin.c 
b/src/plugins/buildui/gbp-buildui-workspace-addin.c
index 1530ebe43..9263c6a91 100644
--- a/src/plugins/buildui/gbp-buildui-workspace-addin.c
+++ b/src/plugins/buildui/gbp-buildui-workspace-addin.c
@@ -213,13 +213,23 @@ gbp_buildui_workspace_addin_build_started (GbpBuilduiWorkspaceAddin *self,
                                            IdePipeline              *pipeline,
                                            IdeBuildManager          *build_manager)
 {
+  IdePipelinePhase phase;
+
+  IDE_ENTRY;
+
   g_assert (IDE_IS_MAIN_THREAD ());
   g_assert (GBP_IS_BUILDUI_WORKSPACE_ADDIN (self));
   g_assert (IDE_IS_PIPELINE (pipeline));
   g_assert (IDE_IS_BUILD_MANAGER (build_manager));
 
-  if (ide_pipeline_get_requested_phase (pipeline) > IDE_PIPELINE_PHASE_CONFIGURE)
+  phase = ide_pipeline_get_requested_phase (pipeline);
+
+  IDE_TRACE_MSG ("Pipeline phase 0x%x requested", phase);
+
+  if (phase > IDE_PIPELINE_PHASE_CONFIGURE)
     dzl_dock_item_present (DZL_DOCK_ITEM (self->log_pane));
+
+  IDE_EXIT;
 }
 
 static void