venv: limit pip version to stay below 24.1 Latest pip version pip fail: WARNING: Ignoring version 5.0.5 of celery since it has invalid metadata: Requested celery<5.1,>=5 from .../celery-5.0.5-py3-none-any.whl (from Kallithea==0.7.0) has invalid metadata: Expected matching RIGHT_PARENTHESIS for LEFT_PARENTHESIS, after version specifier pytz (>dev) ~^ Please use pip<24.1 if you need to use this version. We already use setuptools<67 for the same reason. Pip will keep noting that a newer pip version is available. Resist the temptation to upgrade.