To use notifications with notify-send, you need to intsall a notification deamon.

We will use dunst a customizable and lightweight notification-deamon. In order for the notifications to work, the deamon must be working. So, you need to add the $ dunst command to your startup window manager script. Add this line of code to your startup screept:

dunst &

If you want to customize the notifications window you can add dunstrc file in ~/.config/dunst/ folder.

dragon is a binary that is installed automatically by https://github.com/mwh/dragon, it is a drag-and-drop source/sink for X or Wayland.