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`�*jU � �X � d Z ddlmZ G d� d� Z G d� d� Z e� Z e� Zy)u� Backward-compatibility shim for unpickling Version objects serialized before
packaging 26.1.
Old pickles reference ``packaging._structures.InfinityType`` and
``packaging._structures.NegativeInfinityType``. This module provides minimal
stand-in classes so that ``pickle.loads()`` can resolve those references.
The deserialized objects are not used for comparisons — ``Version.__setstate__``
discards the stale ``_key`` cache and recomputes it from the core version fields.
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