OpenSSL 4.0 is in experimental. This package fails to build against it:

| /usr/bin/install -c -m 755 Modules/_ssl.cpython-314-x86_64-linux-gnu.so /tmp/test_python_yenr7jkp/tmpi78jev7e/python-installation/lib/python3.14/lib-dynload/_ssl.cpython-314-x86_64-linux-gnu.so
|
| make[2]: Leaving directory '/tmp/test_python_yenr7jkp/tmpi78jev7e/python-build'
|
|
|
| --- STDERR ---
|
| [ERROR] _ssl failed to import: /tmp/test_python_yenr7jkp/tmpi78jev7e/python-build/build/lib.linux-x86_64-3.14/_ssl.cpython-314-x86_64-linux-gnu.so: undefined symbol: TLSv1_method
|
| install: cannot stat 'Modules/_ssl.cpython-314-x86_64-linux-gnu.so': No such file or directory
|
| make[2]: *** [Makefile:2572: sharedinstall] Error 1
|
|
|
| ---- END ----
|
…
| x86_64-linux-gnu-gcc -shared -Wl,-O1 -Wl,-Bsymbolic-functions -specs=/usr/share/dpkg/no-pie-link.specs -Wl,-z,relro -g -fwrapv -O3 -flto -fuse-linker-plugin -ffat-lto-objects -frandom-seed=3.14.4-1  -specs=/usr/share/dpkg/no-pie-link.specs -Wl,-z,relro -g -fwrapv -O3 -flto -fuse-linker-plugin -ffat-lto-objects -frandom-seed=3.14.4-1   Modules/_ssl.o -lssl -lcrypto  -o Modules/_ssl.cpython-314-x86_64-linux-gnu.so
| [ERROR] _ssl failed to import: /build/reproducible-path/python3.14-3.14.4/build-static/build/lib.linux-x86_64-3.14/_ssl.cpython-314-x86_64-linux-gnu.so: undefined symbol: TLSv1_method
| Following modules built successfully but were removed because they could not be imported:
| _ssl
|
| Could not build the ssl module!
| Python requires a OpenSSL 1.1.1 or newer

Not sure if the above part is the relevant piece.

Full buildlog
https://breakpoint.cc/openssl-rebuild/logs-4/attempted/python3.14_3.14.4-1_amd64-2026-04-19T11:38:10Z

Sebastian

control: tags -1 + patch

There is a proposal to backport the fix from the 3.15 branch to the 3.14
but it has been postponed. The proposal is here
https://github.com/python/cpython/pull/149783

and I am attaching the patches here. I confirmed that it builds with
them.

Sebastiae

We believe that the bug you reported is fixed in the latest version of
python3.14, 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 1137595@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Matthias Klose <doko@debian.org> (supplier of updated python3.14 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: Tue, 01 Sep 2026 11:47:32 +0200
Source: python3.14
Architecture: source
Version: 3.14.7-2
Distribution: experimental
Urgency: medium
Maintainer: Matthias Klose <doko@debian.org>
Changed-By: Matthias Klose <doko@debian.org>
Closes: 1137595 1146095
Changes:
 python3.14 (3.14.7-2) experimental; urgency=medium
 .
   * Update to the 3.14 branch 2026-09-01.
     - Reworks the test_typing stack test. Closes: #1146095.
   * Apply the OpenSSL 4.0 patches from the 3.15 branch. Closes: #1137595.
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