cppimport has started failing debci tests on most (if not all)
architectures:

112s ___________________________ test_multiple_processes ____________________________
112s
112s     def test_multiple_processes():
112s         with tmp_dir(["tests/hook_test.cpp"]) as tmp_path:
112s             test_code = f"""
112s     import os;
112s     os.chdir('{tmp_path}');
112s     import cppimport.import_hook;
112s     import hook_test;
112s             """
112s             processes = [
112s                 Process(target=subprocess_check, args=(test_code,)) for i in range(100)
112s             ]
112s
112s             for p in processes:
112s                 p.start()
112s
112s             for p in processes:
112s                 p.join()
112s
112s >           assert all(p.exitcode == 0 for p in processes)
112s E           assert False
112s E            +  where False = all(<generator object test_multiple_processes.<locals>.<genexpr> at 0x7fdfabf48ba0>)
112s
112s tests/test_cppimport.py:236: AssertionError
112s ----------------------------- Captured stdout call -----------------------------
112s Traceback (most recent call last):
112s   File "<string>", line 5, in <module>
112s   File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
112s   File "<frozen importlib._bootstrap>", line 1322, in _find_and_load_unlocked
112s   File "<frozen importlib._bootstrap>", line 1262, in _find_spec
112s   File "/usr/lib/python3/dist-packages/cppimport/import_hook.py", line 21, in find_spec
112s     cppimport.imp(fullname, opt_in=True)
112s   File "/usr/lib/python3/dist-packages/cppimport/__init__.py", line 50, in imp
112s     return imp_from_filepath(filepath, fullname)
112s            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
112s   File "/usr/lib/python3/dist-packages/cppimport/__init__.py", line 87, in imp_from_filepath
112s     build_safely(filepath, module_data)
112s   File "/usr/lib/python3/dist-packages/cppimport/importer.py", line 33, in build_safely
112s     with filelock.FileLock(lock_path, timeout=1):
112s   File "/usr/lib/python3/dist-packages/filelock/_api.py", line 339, in __enter__
112s     self.acquire()
112s   File "/usr/lib/python3/dist-packages/filelock/_api.py", line 295, in acquire
112s     self._acquire()
112s   File "/usr/lib/python3/dist-packages/filelock/_unix.py", line 42, in _acquire
112s     fd = os.open(self.lock_file, open_flags, self._context.mode)
112s          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
112s FileNotFoundError: [Errno 2] No such file or directory: '/tmp/tmpe23cj6xk/hook_test.cpython-312-x86_64-linux-gnu.so.lock'


As far as I can tell this is upstream issue #90
https://github.com/tbenthompson/cppimport/issues/90

Not (yet) marking the bug with Severity: Serious since not all systems are effected
(i.e. the test passes on my own local system)

test_multiple_processes is now skipped in 22.08.02-3 and -4, but
that's just a workaround to avoid having to remove the package.
It shouldn't be considered a solution to the problem.

We believe that the bug you reported is fixed in the latest version of
cppimport, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1071993@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Alexandre Detiste <tchet@debian.org> (supplier of updated cppimport package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sat, 12 Sep 2026 14:26:31 +0200
Source: cppimport
Architecture: source
Version: 26.04.17-1
Distribution: unstable
Urgency: medium
Maintainer: Debian Python Team <team+python@tracker.debian.org>
Changed-By: Alexandre Detiste <tchet@debian.org>
Closes: 1071993 1147333
Changes:
 cppimport (26.04.17-1) unstable; urgency=medium
 .
   * Team upload.
   * New upstream version 26.04.17 (Closes: #1147333, #1071993)
   * Add debian/gbp.conf
   * Add debian/salsa-ci.yml
   * Drop "Rules-Requires-Root: no": it is the default now
   * Bump Standards-Version to 4.7.4, drop Priority: tag
   * Use dh-sequence-python3
   * Rewrite d/watch in v5 format
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