[Feature]: use pyenv to install compatible python version

[cb88]

Feature description

This can be done manually currently but webui.sh or somthing should probably handle this so distros that update thier system python to a version that is too new can continue to work out of the box.

Version Platform Description

ArchLinux python 3.13.x is too new.

[vladmandic]

valid request, but...
problem is that pyenv itself is not present on many distros, so we'd need to download and install it.
and installing pyenv includes modifying user's .bashrc which is not i want to do automatically by sdnext.

[cb88]

I had not considered the .bashrc part.... valid point there. Perhaps more of a FAQ thing then, because its one of those things that probably is going occur on and off half the time as Arch or similar distro will have a too new python frequently.

[vladmandic]

perhaps you want to contribute and write a wiki article?
format is markdown, upload file file and i'll add it to wiki and post links to it where appropriate.