Re: [OE-core] [PATCH v2] python3-cython: upgrade 3.2.9 -> 3.3.1

["Mathieu Dubois-Briand" <mathieu.dubois-briand@bootlin.com>]

On Sun Nov 8, 2026 at 10:42 PM CET, Thomas Roos via openembedded-core wrote:
> PyAV 19.0.0, which Home Assistant 2026.11 pins for its stream and
> generic camera integrations, requires Cython 3.3: its generated code
> uses __Pyx_BEGIN_CRITICAL_SECTION, which Cython 3.2 does not provide.
>
> 3.3.1 contains the upstream fixes for the non-deterministic generated
> code that held back the 3.3.0 upgrade (cython#8045, #7982, #8025).
>
> Cython 3.3 still fails intermittently when it builds itself in
> parallel (cython#7997; #8008 and #8013 are not merged). Clean builds
> of python3-cython-native with PARALLEL_MAKE = "-j 32" failed 6 out of
> 20 times with 3.3.1 (and 8 out of 20 with 3.3.0), with the refnanny
> error seen on the autobuilder. With PARALLEL_MAKE = "" all 20 builds
> passed, so build serially for now.
>
> Refresh the line numbers of the build path patch for 3.3.1.
>
> License-Update: none, LICENSE.txt is unchanged.
> AI-Generated: Claude Code, Claude Opus 5.5
> Signed-off-by: Thomas Roos <thomas@roosesweb.de>
> ---

Hi Thomas,

Thanks for the new version.

It does look better, but it looks like we still see some intermittent
reproducibility issues. I had it on my branch for a few days, and
suddenly we had a failed test:

AssertionError: The following deb packages are different and not in exclusion list:
/srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/deb/./x86-64-v3/python3-cython-dbg_3.3.1-r0_amd64.deb
/srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/deb/./x86-64-v3/python3-cython-src_3.3.1-r0_amd64.deb
/srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/deb/./x86-64-v3/python3-cython_3.3.1-r0_amd64.deb
The following ipk packages are different and not in exclusion list:
/srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/ipk/./x86-64-v3/python3-cython-dbg_3.3.1-r0_x86-64-v3.ipk
/srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/ipk/./x86-64-v3/python3-cython-src_3.3.1-r0_x86-64-v3.ipk
/srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/ipk/./x86-64-v3/python3-cython_3.3.1-r0_x86-64-v3.ipk
The following rpm packages are different and not in exclusion list:
/srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/rpm/./x86_64_v3/python3-cython-3.3.1-r0.x86_64_v3.rpm
/srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/rpm/./x86_64_v3/python3-cython-dbg-3.3.1-r0.x86_64_v3.rpm
/srv/pokybuild/yocto-worker/reproducible/build/build-st/reproducibleB-extended/tmp/deploy/rpm/./x86_64_v3/python3-cython-src-3.3.1-r0.x86_64_v3.rpm

https://autobuilder.yoctoproject.org/valkyrie/#/builders/37/builds/5342
https://valkyrie.yocto.io/pub/repro-fail/oe-reproducible-20261111-opb4ps2w/packages/diff-html/

Can you have a look at the issue?

Thanks,
Mathieu


-- 
Mathieu Dubois-Briand, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com