MarsSeed [1] filed a deletion request for gtk3-ubuntu [2]: This package is not very actively maintained, and now completely superfluous: all core patches made by Debian/Ubuntu have been upstreamed to main gtk3 release. Only a few Ubuntu-exclusive (theme, menu etc.) modifications remain in their packaging. [a] None of which are relevant on Arch Linux. Safe to delete this now. [a]: https://salsa.debian.org/gnome- team/gtk3/-/blob/4508d83a/debian/changelog [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/gtk3-ubuntu/