I've disabled the Cygwin workflow because it is failing the build with the new pyproject.toml. Cygwin plans to skip
to Python 3.12 in the near future.

Only python 3.8 and 3.9 are updated.
Python 2, 3.6 and 3.7 are not anymore supported upstream.
Python 3.12 will be in the near future introduced and we will skip 3.10 
and 3.11 

Not sure why, but it looks like the freebsd tests didn't trigger on this PR and did on #26243. Those tests will need to be updated because freebsd defaults to python3.9.

because freebsd defaults to python3.9.

Maybe pkg install -y python310 in the virtual environment?

Maybe pkg install -y python310 in the virtual environment?

Yeah, I think you need to explicitly install python3.10 then e.g. use a python3.10 binary explicitly for the rest of the script. Also it looks like 3.11 is packaged, so you could use that too.

it looks like the freebsd tests didn't trigger on this PR

Looks like removing the [wheel build] fixes that, so there is a logic error somewhere.

Should be good to go.

I've disabled the Cygwin workflow because it is failing the build with the new pyproject.toml. Cygwin plans to skip to Python 3.12 in the near future.

Only python 3.8 and 3.9 are updated.
Python 2, 3.6 and 3.7 are not anymore supported upstream.
Python 3.12 will be in the near future introduced and we will skip 3.10 
and 3.11 

Source for Python update plans.

It looks like CPython dropped some Cygwin-specific sections a few years back, and are aware the current build system is hard to change, so getting a new version of Python working on Cygwin might take longer than usual.

In the meantime, I think I saw mentions of CI runs on BSD, which should keep Cygwin from breaking too badly. I think SIMD stack alignment issues would be the main difference from Linux they wouldn't notice.

For the question from #26244, I suspect dropping Cygwin will make the other platforms simpler. I'll be back whenever a test version of 3.12 comes out to figure out how to get CI to use that (either cygwin/cygwin-install-action#12 or the version-specifications of egor-tensin/setup-python).