Thanks. I have two comments:

1. Could you also change the line

   zxing-cpp/.github/workflows/ci.yml

   Line 143 in a6a181f

   python-version: ['3.9', '3.10', '3.11']

   accordingly? Disclaimer, I don't know if this would actually work a.t.m. i.e. whether or not the CI environment already supports python 3.12

2. I decided in the past to only "support" / deliver prebuild wheels for most current 3 versions, which would mean dropping 3.9. Any thoughts on that practice?

1. Yeah, absolutely! I can confirm that 3.12 is supported by setup-python already. I'll push a new commit for that.
2. Certainly not a problem for me. I suppose if you wanted to maximize support then all officially supported python versions might be nice to support (3.8 and up) but that would obviously mean 5 concurrent versions at the moment. If nobody has "complained" about the lack of 3.8 support thus far, then I'd guess nobody would miss 3.9 either.

EDIT: The python-build workflow also currently uses Python 3.9 to build the source distribution and install cibuildwheel. I take it these should be bumped to 3.10 if 3.9 is dropped?

Thinking about this some more I now believe that we should do the following:

1. have python-build keep 3.9 (or maybe even add 3.8 if that is still officially supported)
2. have CI only build with one python version, say 3.12

Reasoning:

• I've never seen that only a single python version from CI failed.
• The python-build is currently separate because it takes so much time, so it is only run near the next release. If it takes even longer, that does not really make much of a difference to me.
• That said, for people who just want to download wheels from PyPi, it makes a substantial difference if they have to setup a c++ build environment just to build the wheel from the source package.

Your reasoning sounds fine to me, I'll update the PR!

I've now made the above changes, and tested to make sure both the ci and python-build workflows run successfully. I had to add an explicit step to install setuptools , which I believe was previously automatically added with pip, but no longer is.