MarsSeed [1] filed a deletion request for gtk-rc [2]: Abandoned package, not updated in 2 years. I flagged it OOD one year ago: no response. 0 votes/comments. It seems only the gtk4-git package is in demand, with 17 votes and dozens of pages of comments. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/gtk-rc/