MarsSeed [1] filed a deletion request for librdkafka1 [2]: There isn't any AUR package anymore that would depend on this abandoned legacy version from 2022 anymore. (Last reverse dependencies were the EOL ceph-octopus and ceph-pacific, deleted in 2024-04.)
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/librdkafka1/
