# stolen from https://wiki.archlinux.org/title/Dwm#Restart_dwm and therefore may be under the GNU Free Documentation License v1.3.
# relaunch DWM if the binary changes, otherwise bail
csum=""
new_csum=$(sha1sum $(which dwm))
while true
do
    if [ "$csum" != "$new_csum" ]
    then
        csum=$new_csum
        dbus-launch dwm
    else
        exit 0
    fi
    new_csum=$(sha1sum $(which dwm))
    sleep 0.5
done