[MM3-users] Re: Mailman issues after re-boot

paulrubin37@gmail.com writes:

| python3-virtualenvwrapper | Enhancements to virtualenv | package

I suspect this is part of the problem, it's probably blocking any other Debian virtualenv packages as "conflicts".

mail:~ # python3 -m venv --help usage: venv [-h] [--system-site-packages] [--symlinks | --copies] [--clear] [--upgrade] [--without-pip] [--prompt PROMPT] [--upgrade-deps] ENV_DIR [ENV_DIR ...]

You should be able to use "python3 -m venv $ENV_DIR" to create an appropriate virtual environment, and then

. /path/to/venv/bin/activate
python -m pip --upgrade install pip    # NOTE: using the venv python3!
python -m pip install build wheel

followed by installing mailman and friends in the same way.

If there are complaints about pip itself, I believe "python -m ensure_pip" should do the trick.