Variety on Bunsenlabs Linux

First: check content of the following environment variables:

echo $XDG_CURRENT_DESKTOP
>BunsenLabs
echo  $DESKTOP_SESSION
>bunsenlabs

In $HOME/.config/variety/scripts/set_wallpaper:

Find the line SIMPLE_VMS, which initially looks something like this:

SIMPLE_WMS=("bspwm" "dwm" "herbstluftwm" "i3" "i3-with-shmlog" "jwm" "openbox" "qtile" "xmonad")

Add “BunsenLabs” / “bunsenlabs”, like this:

SIMPLE_WMS=("bspwm" "dwm" "herbstluftwm" "i3" "i3-with-shmlog" "jwm" "openbox" "qtile" "xmonad" "BunsenLabs" "bunsenlabs")

Save, and restart variety.