I'm a bit confused about the packaging. "kio-core" seems to install files under the KDE5 plugin directory. The "kcm_trash.desktop" file installed by this package uses "Exec=kcmshell5 kcm_trash". I don't have "kcmshell5" on my system, only "kcmshell6" so the desktop file won't work. Is that package actually still used on a KDE6 install? The "kf6-kio" package seems to install most (not all) of the same things but under KDE6 plugin directories.