Comment by driggs

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

You are incorrect about needing to use an additional tool to install a "global" tool like `ruff`; `pip` does this by default when you're not using a virtual environment. In fact, this behavior is made more difficult by tools like `uv` if or `pipx` they're trying to manage Python executables as well as dependencies.