From: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Date: Tue, 9 Dec 2025 18:16:19 +0000 (+0100)
Subject: [3.13] gh-138061: Exclude __pycache__ directory  from the computed digest in the... 
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ab8ac4b76018a8ba7564d9252ee229091b2d5402;p=thirdparty%2FPython%2Fcpython.git

[3.13] gh-138061: Exclude __pycache__ directory  from the computed digest in the JIT stencils (GH-138131) (#142481)

Co-authored-by: alm <alonme@users.noreply.github.com>
---

diff --git a/Misc/NEWS.d/next/Build/2025-08-27-09-52-45.gh-issue-138061.fMVS9w.rst b/Misc/NEWS.d/next/Build/2025-08-27-09-52-45.gh-issue-138061.fMVS9w.rst
new file mode 100644
index 000000000000..7af79d0b87ef
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2025-08-27-09-52-45.gh-issue-138061.fMVS9w.rst
@@ -0,0 +1 @@
+Ensure reproducible builds by making JIT stencil header generation deterministic.
diff --git a/Tools/jit/_targets.py b/Tools/jit/_targets.py
index 34f4e20b95d1..fe953ddddcfc 100644
--- a/Tools/jit/_targets.py
+++ b/Tools/jit/_targets.py
@@ -53,6 +53,9 @@ class _Target(typing.Generic[_S, _R]):
         hasher.update(PYTHON_EXECUTOR_CASES_C_H.read_bytes())
         hasher.update((out / "pyconfig.h").read_bytes())
         for dirpath, _, filenames in sorted(os.walk(TOOLS_JIT)):
+            # Exclude cache files from digest computation to ensure reproducible builds.
+            if dirpath.endswith("__pycache__"):
+                continue
             for filename in filenames:
                 hasher.update(pathlib.Path(dirpath, filename).read_bytes())
         return hasher.hexdigest()