Doesn’t pyenv solve?

In Linux there are already much better options than Ardour that I highly suggest to try:

• REAPER as a standard DAW and Ardour equivalent.
• Bitwig Studio for more sequencer-like worflows (alternative to Ableton Live, FL)

These are not hobbyist products, we are talking about professional level software here, so they are both paid.

In any case REAPER is usable for free if you don’t use it commercially and it’s so cheap for the value it brings that there are no excuses for not buying it.

Depending on what you do, the professional options are REAPER as a standard DAW and Bitwig Studio for more sequencer-based worflows.

Not sure about plugin availability though.

Python.

Just remember to use pyenv for interpreter installation, version and environment management. It’s pretty straightforward that way and you have predictability.

Don’t ever manually fiddle with the system python and/or libraries or you’ll break your system. You should just rely on the package manager for that.