If you have issues install it with the ‘old’ version, I’ve just packaged latest archinstall from master-tree from:
❯ sudo paru archinstall
1 gnoppix/archinstall master-1 [846.95 KiB 5.06 MiB]
Just another guided/automated Arch Linux installer with a twist
2 extra/archinstall 3.0.1-2 [0 B 5.07 MiB]
Just another guided/automated Arch Linux installer with a twist
3 aur/archinstall-git 2.6.0.r5.g0852a7c-2 [+2 ~0.00]
Just another guided/automated Arch Linux installer with a twist
:: Packages to install (eg: 1 2 3, 1-3):
select 1 its in the Gnoppix Arch Repo … you should be able to install any WindowManager now.