how to connect to wifi on archiso (arch linux 6.10.7+)
this method assumes iwd service started
$ systemctl start iwd
and it also assumes you have a wifi card supported in the linux kernel
$ iwctl station list
wlan0
finally you can connect with a single command
$ iwctl station wlan0 connect "[SSID]"
passphrase: [password]
...and that's how you can connect to wifi on arch linux installer (archiso), again this only works for kernel 6.10.7 or later