first install v2ray core
sudo pacman -S v2ray
then install v2rayA as client
download the file with name like this
installer_archlinux_x64_2.2.7.4.pkg.tar.zst
then with command line run
sudo pacman -U ./installer_archlinux_x64_2.2.7.4.pkg.tar.zst
then you can control it from http://127.0.0.1:2017/ address
