MarsSeed [1] filed a deletion request for frinfon [2]: Orphan, broken Perl6 package from 2017. Upstream not developed since that year. [a]
Nothing depends on it. [a]: https://github.com/skaji/Frinfon [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/frinfon/
