MarsSeed [1] filed an orphan request for r-expm [2]: Broken since 2023-11-29 due to upstream deleting the source due to newer release. Flagged out-of-date since 2024-10-15.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/r-expm/
