FredBezies [1] filed a deletion request for vice-gtkglext [2]: Starting with version 3.5, Vice is using gtk3. So this version using a gtk2 related technology is now obsolete. "* Changes in Vice 3.5 ===================== This release completes the transition to the new GTK3 based GUI and fixes a bunch of long standing issues (see below)." -> https://vice-emu.sourceforge.io/NEWS [1] https://aur.archlinux.org/account/FredBezies/ [2] https://aur.archlinux.org/pkgbase/vice-gtkglext/