7 years ago on cola...

....I was running Manjaro/xfce, and did a little 'experiment': installed mucho desktops.
$ sudo pacman -S <DE name>
LXDE (installed in 20 seconds)
fluxbox  (installed in 5 seconds)
gnustep (target not found)
cinnamon (installed in 20 seconds)
deepin (bunch of errors)
budgie (target not found)
enlightenment (installed in 20 seconds)
gnome and gnome-extra (huge - but installed in about 2 minutes)
kde,kde4,kde5,plasma5  (all failed, target not found)
lxqt (installed in 5 seconds)
mate (installed in 20 seconds)
awesome (tiling window mgr - installed in 3 seconds)
cde (target not found)
razor-qt (errors)
icewm (installed in 3 seconds)
At the end, this is what the login mgr (SLIM) looked like:
http://imgur.com/a/aO1Ib