On Python multi installs

Yes, generally people already use an additional tool for managing their Python executables, like their operating system’s package manager:

$> sudo apt-get install python3.10 python3.11 python3.12

And then it’s simple to create and use version-specific virtual environments:

```
$> python3.11 -m venv .venv3.11
$> source .venv3.11/bin/activate
$> pip install -r requirements.txt