Bug#1031760: autopkg tests fail with python3.11

[Matthias Klose]

Package:sqlobject
Version: 3.10.1+dfsg-1
Severity: serious
Tags: sid bullseye

the autopkg tests fail with python3.11:

[...]
autopkgtest [03:29:29]: test testdb-setuptools: [-----------------------
error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
python3-xyz, where xyz is the package you are trying to
install.

If you wish to install a non-Debian-packaged Python package,
create a virtual environment using python3 -m venv path/to/venv.
Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
sure you have python3-full installed.

If you wish to install a non-Debian packaged Python application,
it may be easiest to use pipx install xyz, which will manage a
virtual environment for you. Make sure you have pipx installed.

See /usr/share/doc/python3.11/README.venv for more information.

note: If you believe this is a mistake, please contact your Python installation
or OS distribution provider. You can override this, at the risk of breaking your
Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification.
autopkgtest [03:29:30]: test testdb-setuptools: -----------------------]
autopkgtest [03:29:30]: test testdb-setuptools: - - - - - - - - - - results - -
- - - - - - - -
testdb-setuptools FAIL non-zero exit status 1
autopkgtest [03:29:30]: test testdb-setuptools: - - - - - - - - - - stderr - -
- - - - - - - -
error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
python3-xyz, where xyz is the package you are trying to
install.

If you wish to install a non-Debian-packaged Python package,
create a virtual environment using python3 -m venv path/to/venv.
Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
sure you have python3-full installed.

If you wish to install a non-Debian packaged Python application,
it may be easiest to use pipx install xyz, which will manage a
virtual environment for you. Make sure you have pipx installed.

See /usr/share/doc/python3.11/README.venv for more information.

note: If you believe this is a mistake, please contact your Python installation
or OS distribution provider. You can override this, at the risk of breaking your
Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification.
autopkgtest [03:29:30]: @@@@@@@@@@@@@@@@@@@@ summary
testdb PASS
testdb-setuptools FAIL non-zero exit status 1