¿What's your distro? At least here in Fedora, krandrtray is part of kdebase-workspace, a big package with several dependences (and with other packages depending of it). This is why yum-presto is a must nowaday in Fedora :-).
Other distros (as Kubuntu) have splitted kdebase-workspace (and the other KDE big modules) in multiple packages.
Depends on your distro
¿What's your distro? At least here in Fedora, krandrtray is part of kdebase-workspace, a big package with several dependences (and with other packages depending of it). This is why yum-presto is a must nowaday in Fedora :-).
Other distros (as Kubuntu) have splitted kdebase-workspace (and the other KDE big modules) in multiple packages.