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[3.14] GH-134291: Support older macOS deployment targets for JIT builds (GH-137211) #137701

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Merged
merged 1 commit into from
Aug 13, 2025

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ned-deily
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This rolls back GH-126196 and adds stricter checks for newer APIs in JIT CI. We don't really need the superpowers of the newer API (rapid flip-flopping permissions on JIT pages) since our JIT doesn't use self-modifying code.

This allows downstream distributors (like uv, CC @zanieb) to ship the JIT for more users.

@ned-deily
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There was a minor merge conflict when backporting #137211 so I manually cherry-picked a backport. This should go into 3.14.0rc2 so we and other downstream distributors can build with an older macOS release target.

@hugovk hugovk merged commit 2392232 into python:3.14 Aug 13, 2025
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