MarsSeed [1] filed a deletion request for xfce4-genmon-plugin-gtk2 [2]: The Gtk2 based Xfce4 has been EOL for 5+ years now. (With some components having been last released even earlier, 7 years ago, in 2017.)
This package mistakenly declares 'xfce4-panel' as its dependency, which is carried by Arch repo and uses the latest version with gtk3. But the true dependency of this, 'xfce4-panel-gtk2' (released in 2017) fails to build from source, just like many other Xfce4-Gtk2 packages on AUR. All Xfce4 distro packages using Gtk2 are pending deletion now (actually some have already been accepted by a PM to be dropped). Not useful to keep this. Arch extra repo carries the current version of xfce4-genmon-plugin (based on gtk3). [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/xfce4-genmon-plugin-gtk2/
