I just hit a bug with okular (rarely used it and just got surprised by this) https://bugs.archlinux.org/task/53003 After more investigation I realized the kactivites was being provided by kactivities4 (which no longer exists). Further investigation showed that I had a bunch of old kde4 packages (some still in repos, some not) installed. I think this is the list:- kdebase-runtime (16.12.2-1) libkscreen4 (1.0.5-2) qjson (0.9.0-1) libkexiv2_4 (15.08.3-2) kdelibs (4.14.29-1) qca-qt4 (2.1.3-1) polkit-qt4 (0.112.0+git20160226-1) phonon-qt4 (4.9.1-1) phonon-qt4-vlc (0.9.0-1) libqzeitgeist (0.8.0-6) libdbusmenu-qt4 (0.9.3+16.04.20160218-1) attica-qt4 (0.4.2-3) Only libkscreen4 and libkexiv2_4 were no longer in repos, and uninstalling both removed the rest. Did I miss an announcement or anything where I'd have noted these packages disappearance and uninstalled them? Or should I be keeping an eye on pacman -Qm (I have 137 packages there at this point)?