x32 branch support
Pacman-mirrors now support the x32 branches.
As user you don’t have to do anything. Pacman-mirrors will detect your architure only on i686 - if you run anything older than that please let me know.
Arguments which uses branch-name has not changed - you use the usual names stable, testing and unstable.
Until the stable branch is actually created on x32 you must switch branch to testing or unstable with
sudo pacman-mirrors -aS testing | unstable