MarsSeed [1] filed a deletion request for perl6-base64 [2]: Cleanup of Perl6 based cro (PRQ#51534) from 2018: broken, abandoned on AUR, just like almost all of its dependencies.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/perl6-base64/
