Installation Help on Raspberry Pi OS (Debian 11.9) With Python 3.12.3

[RichieRogers]

Hi,
New to NGINX Unit.
I've got a Raspberry Pi4 running Raspberry OS (Debian 11.9)
Python 3.12.3 is installed.

How do I go about installing and configuring Unit to work with my Python FastAPI application?
The default Debian 11 instructions sort of work, although only Python 3.9 is available:
apt search --names-only '^unit-'

unit-python3.9/stable,now 1.32.1-1~bullseye arm64 [installed]
  Python 3.9 module for NGINX Unit

unit-python3.9-dbg/stable 1.32.1-1~bullseye arm64
  Python 3.9 module for NGINX Unit (debug symbols)

So, is there a version for 3.12.3?
I'm not looking for a Docker version with the extra overhead that would entail on something as small as a Raspberry Pi.
Also, where's the best place for a "noddy guide" to configuring Unit for my setup?

Thanks,
Richie