[PATCH] runqueue.py: Ensure setscene tasks don't break dependency order

[Richard Purdie <richard.purdie@linuxfoundation.org>]

If A depends upon B which depends upon C and the setscene for B
succeeds but C is going to get rebuilt, we should wait for C to
try and build A but currently we don't.

This is due to the timing of when we run the task_skip() as this
triggers other tasks to become buildable. This patch moves the timing
of that call to a more appropriate place allowing dependencies to
behave as expected.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
diff --git a/lib/bb/runqueue.py b/lib/bb/runqueue.py
index e00a299..acea8f2 100644
--- a/lib/bb/runqueue.py
+++ b/lib/bb/runqueue.py
@@ -1243,9 +1243,6 @@ class RunQueueExecuteTasks(RunQueueExecute):
 
         logger.debug(1, 'Full skip list %s', self.rq.scenequeue_covered)
 
-        for task in self.rq.scenequeue_covered:
-            self.task_skip(task)
-
         event.fire(bb.event.StampUpdate(self.rqdata.target_pairs, self.rqdata.dataCache.stamp), self.cfgData)
 
         schedulers = self.get_schedulers()
@@ -1339,8 +1336,14 @@ class RunQueueExecuteTasks(RunQueueExecute):
         task = self.sched.next()
         if task is not None:
             fn = self.rqdata.taskData.fn_index[self.rqdata.runq_fnid[task]]
-
             taskname = self.rqdata.runq_task[task]
+
+            if task in self.rq.scenequeue_covered:
+                logger.debug(2, "Setscene covered task %s (%s)", task,
+                                self.rqdata.get_user_idstring(task))
+                self.task_skip(task)
+                return True
+
             if self.rq.check_stamp_task(task, taskname):
                 logger.debug(2, "Stamp current task %s (%s)", task,
                                 self.rqdata.get_user_idstring(task))