MarsSeed [1] filed a deletion request for ocaml-xmlplaylist [2]: Upstream EOL for 3.5 years. [a] Unbuildable, not compatible with Arch repo's current ocaml 5.
[a]: https://github.com/savonet/ocaml-xmlplaylist [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ocaml-xmlplaylist/
