Add preliminary support for Python 3.12a7.

[icemac]

This hopefully fixes https://github.com/zopefoundation/AccessControl/actions/runs/4713168090/jobs/8358693277

[icemac]

o no, Directory not empty is back on macOS.

Even the last successful build https://github.com/zopefoundation/AccessControl/actions/runs/4650409246/jobs/8229390839
had this problem.

[icemac]

Maybe a pre-release of zope.proxy would help.

[icemac]

zope.proxy has the same problem as depends on zope.security: https://github.com/zopefoundation/zope.proxy/actions/runs/4524463715/jobs/7968314536
But zope.security is fine: https://github.com/zopefoundation/zope.security/actions/runs/4713161605/jobs/8358679615
So a pre-release of zope.security might help.

[dataflake]

You will see the failure as long as there are no x86_64 wheels found for the problematic dependencies. As soon as the GHA runner tries to build those wheels it will fail.

IMHO the fix is to change how those problematic packages are built in the first place. Those that try to install other C-based dependencies and then find header files all break. Those that have their own copy of the dependency header files don't break. zope.security tries that dance with zope.proxy.

[icemac]

Updating zope.security to a7, breaks the tests over there: zopefoundation/zope.security#97

Now we have a problem, Houston.

[dataflake]

That's unrelated to the issue here, though. zope.security and/or zope.proxy apparently need some massaging to be Python 3.12-compatible.

[icemac]

@dataflake wrote:

Those that try to install other C-based dependencies and then find header files all break.

So you'd suggest to copy over the needed header files to the depending packages and drop using setup_requires. – Let my try this here.

[icemac]

No, AccessControl is not part of the problem, it has copies of the needed header files (which should be updated BTW (#140)), so I'll have a look at zope.proxy.

[dataflake]

AccessControl is not the problem and I didn't say it was. zope.security has the problem. It tries to install zope.proxy to get at the headers.

[icemac]

Superseded by #141.