virtualenv installed incorrectly on cc-ubuntu20.04

[msherman64]

Running virtualenv returns ModuleNotFoundError: No module named 'virtualenv.seed.via_app_data'

which virtualenv shows the executable in /usr/local/bin/virtualenv
dpkg -l | grep virtualenv shows that python3-virtualenv is installed.

However, pip show virtualenv shows that it's also installed into /usr/local/lib/python3.8/dist-packages

Doing the following fixes the issue:

• pip uninstall virtualenv
• apt install --reinstall python3-virtualenv

It appears that pip installs virtualenv on these lines, from this requirements file.