MarsSeed [1] filed a deletion request for ietf-idnits [2]: Broken, abandoned tool from 2020. Current source is missing (404). Also it is extremely niche: was made only for the RFC editor staff working at IETF. Not useful to keep on AUR. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ietf-idnits/