Avizo is a simple notification daemon, mainly intended to be used for multimedia keys for example with Sway.
bindsym XF86AudioRaiseVolume exec volumectl raise
bindsym XF86AudioLowerVolume exec volumectl lower
bindsym XF86AudioMute exec volumectl mute
bindsym XF86MonBrightnessUp exec lightctl raise
bindsym XF86MonBrightnessDown exec lightctl lower
for_window [app_id="avizo-service"] border pixel 0
for_window [app_id="avizo-service"] sticky toggle
no_focus [app_id="avizo-service"]
exec "avizo-service"
meson build
ninja install
A package called avizo is also available in the Arch Linux User Repository.