`pip install brotli` return a deprecation warning

For an install (here on a raspberrypi) of brotli 1.0.9 I got a warning from pip which says:

> DEPRECATION: brotli is being installed using the legacy 'setup.py install' method, because it does not have a 'pyproject.toml' and the 'wheel' package is not installed. pip 23.1 will enforce this behaviour change. A possible replacement is to enable the '--use-pep517' option. Discussion can be found at https://github.com/pypa/pip/issues/8559

- raspberrypi3 with raspbian 10
- python-3.10.8
- pip 22.3