https://docs.python.org/3.10/whatsnew/3.10.html#id2

The PY_SSIZE_T_CLEAN macro must now be defined to use PyArg_ParseTuple() and Py_BuildValue() formats which use #: es#, et#, s#, u#, y#, z#, U# and Z#. See Parsing arguments and building values and the PEP 353.

https://docs.python.org/3.10/c-api/arg.html#arg-parsing
https://www.python.org/dev/peps/pep-0353
https://bugs.python.org/issue40943

I reported the issue to upstream: https://gitlab.gnome.org/GNOME/libxml2/-/issues/203

And I proposed a fix: https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/87

I proposed to https://src.fedoraproject.org/rpms/libxml2/pull-request/10 to backport my fix and fix the package (always regenerate the 3 Python generated files).

https://src.fedoraproject.org/rpms/libxml2/pull-request/10

FEDORA-2020-576ed43594 has been pushed to the Fedora 34 stable repository.
If problem still persists, please make note of it in this bug report.

FEDORA-2020-160ee73cea has been pushed to the Fedora ELN stable repository.
If problem still persists, please make note of it in this bug report.

> I proposed to https://src.fedoraproject.org/rpms/libxml2/pull-request/10 to backport my fix and fix the package (always regenerate the 3 Python generated files).

FYI my PR has been merged upstream:
* https://gitlab.gnome.org/GNOME/libxml2/-/commit/f42a0524c693a6d52e95a37c9cf04df1be48262c
* https://gitlab.gnome.org/GNOME/libxml2/-/commit/ac5e99911a45ad6f57a6aa7b33fd2de9da72aa72

Hi, I've encountered this issue on Fedora 35 container.

This issue occurs when I try to build the module build for RHEL-8 using this command:
rhpkg module-build --scratch --buildrequires platform:el8.5.0

The Fedora container that I'm using is here:
https://gitlab.cee.redhat.com/platform-eng-core-services/core-services-dockerfiles/-/tree/master/pkg-container

Error message: Could not execute module_build: PY_SSIZE_T_CLEAN macro must be defined for '#' formats

PS: I've tried it in the Fedora 34 container and it worked as expected, so the issue must be in the commits between these two versions

Reopening this BZ, if you prefer to create a new one let me know.

I am not sure that gitlab.cee link works outside of the Red Hat network and this is  Fedora Bugzilla. Could you provide a more accessible reproducer, please?


Also, what makes you think that the error comes from libxml2?

A list of installed packages (including their versions, releaes and architecture) would be helpful to determine what packages could cause this. Could you please attach the output of `rpm -qa`?

Also, is there a way to see the full traceback?

> Also, is there a way to see the full traceback?

Please, run again with rhpkg --debug. That raises the exception instead of hiding it:

    except Exception as e:
        ...

        if getattr(client.args, 'debug', False):
            raise
        log.error('Could not execute %s: %s' % (client.args.command.__name__, e))
        sys.exit(1)

I've got it:

Traceback (most recent call last):
  File "/usr/bin/rhpkg", line 16, in <module>
    main()
  File "/usr/lib/python3.10/site-packages/rhpkg/__main__.py", line 104, in main
    sys.exit(client.args.command())
  File "/usr/lib/python3.10/site-packages/pyrpkg/cli.py", line 2296, in module_build
    build_ids = self._cmd.module_submit_build(
  File "/usr/lib/python3.10/site-packages/pyrpkg/__init__.py", line 3863, in module_submit_build
    resp = self.module_send_authorized_request(
  File "/usr/lib/python3.10/site-packages/pyrpkg/__init__.py", line 3786, in module_send_authorized_request
    resp = requests.request(verb, url, data=data, auth=auth, **kwargs)
  File "/usr/lib/python3.10/site-packages/requests/api.py", line 61, in request
    return session.request(method=method, url=url, **kwargs)
  File "/usr/lib/python3.10/site-packages/requests/sessions.py", line 542, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python3.10/site-packages/requests/sessions.py", line 662, in send
    r = dispatch_hook('response', hooks, r, **kwargs)
  File "/usr/lib/python3.10/site-packages/requests/hooks.py", line 31, in dispatch_hook
    _hook_data = hook(hook_data, **kwargs)
  File "/usr/lib/python3.10/site-packages/requests_kerberos/kerberos_.py", line 385, in handle_response
    self.cbt_struct = kerberos.channelBindings(application_data=cbt_application_data)
SystemError: PY_SSIZE_T_CLEAN macro must be defined for '#' formats



A reproducer:

>>> import kerberos
>>> kerberos.__file__
'/usr/lib64/python3.10/site-packages/kerberos.cpython-310-x86_64-linux-gnu.so'
>>> kerberos.channelBindings(application_data={})
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
SystemError: PY_SSIZE_T_CLEAN macro must be defined for '#' formats

Reported as bz2008899.