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Author SHA1 Message Date
Avery Pennarun
f1305b49eb Move env.{add,get}_lock() into cycles.py, and rename.
They really aren't locks at all, they're a cycle detector.  Also rename
REDO_LOCKS to a more meaningful REDO_CYCLES.  And we'll move the
CyclicDependencyError exception in here as well, instead of state.py
where it doesn't really belong.
2018-12-05 02:26:58 -05:00