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[3.14] gh-142454: Make the JIT digest more deterministic by sorting the files in Tools/jit (GH-142455) (#142485)

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gh-142454: Make the JIT digest more deterministic by sorting the files in Tools/jit (GH-142455)
(cherry picked from commit bcf90de8ba)

Co-authored-by: Miro Hrončok <miro@hroncok.cz>
Co-authored-by: Ken Jin <kenjin4096@gmail.com>
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Miss Islington (bot) 2025-12-09 19:50:53 +01:00 • committed by GitHub
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Misc/NEWS.d/next/Build/2025-12-09-13-33-46.gh-issue-142454.cqUxzQ.rst Normal file
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@ -0,0 +1,4 @@
When calculating the digest of the JIT stencils input, sort the hashed files
by filenames before adding their content to the hasher. This ensures
deterministic hash input and hence deterministic hash, independent on
filesystem order.

2
Tools/jit/_targets.py
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@ -72,7 +72,7 @@ def _compute_digest(self) -> str:
# Exclude cache files from digest computation to ensure reproducible builds.
if dirpath.endswith("__pycache__"):
continue
for filename in filenames:
for filename in sorted(filenames):
hasher.update(pathlib.Path(dirpath, filename).read_bytes())
return hasher.hexdigest()