urras [1] filed a deletion request for ratox [2]:
Old snapshot of Ratox uses the old API, and will not compile against
current version of Toxcore. Also, there will be no more snapshot
releases of Ratox until Toxcore is in Beta, which isn't expected for
some months.
[1] https://aur.archlinux.org/account/urras/
[2] https://aur.archlinux.org/pkgbase/ratox/