MarsSeed [1] filed a deletion request for ocaml-odn [2]: Deprecated by upstream since 2019. [a] Last release was in 2013. [b] Abandoned and unused on AUR. [a]: https://github.com/gildor478/ocaml-data-notation [b]: https://opam.ocaml.org/packages/ocaml-data-notation [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ocaml-odn/