Binary package “haskell-gtk-sni-tray-utils” in ubuntu oracular

standalone StatusNotifierItem/AppIndicator tray

 gtk-sni-tray provides a StatusNotifierHost widget written using the
 gtk+3 bindings for haskell provided by gi-gtk. It also provides a
 simple standalone executable, gtk-sni-tray-standalone, that is
 configured with command line arguments. This executable will run the
 aforementioned widget by itself in a strut window, on each monitor
 for each it is requested.