-from singlepipe import (ControlBase, SimpleHandshake, PassThroughStage)
-from multipipe import CombMuxOutPipe
-from multipipe import PriorityCombMuxInPipe
+from nmutil.singlepipe import (ControlBase, SimpleHandshake, PassThroughStage)
+from nmutil.multipipe import CombMuxOutPipe
+from nmutil.multipipe import PriorityCombMuxInPipe