No. It has to be pure Arch, installed the old fashion way, without the archinstall script [0].

[0] https://wiki.archlinux.org/title/Archinstall

No.

(I used Manjaro in the past but I had many more issues when updating packages than with my current Arch.)

I use Manjaro... on a Raspberry Pi! It took less disk space than the native Pi OS.

No.

(I used Manjaro in the past but I had many more issues when updating packages then with my current Arch.)