Hack around a pydantic bug preventing GCing modules#199
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pydantic-core doesn't process exclude_if in its tp_traverse fields, and so using exclude_if in the obvious way renders the module it is in un-GCable. This isn't a huge problem in basic use but contributes to serious leaks when using sandboxed setups like Temporal/Vercel workflows. Work around it by putting weakref.proxy in instead.
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anbuzin
approved these changes
Jul 9, 2026
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pydantic-core doesn't process exclude_if in its tp_traverse fields,
and so using exclude_if in the obvious way renders the module it is in
un-GCable.
This isn't a huge problem in basic use but contributes to serious
leaks when using sandboxed setups like Temporal/Vercel workflows.
Work around it by putting weakref.proxy in instead.