Packages with the tray use flag

gui-apps / waybar : Highly customizable Wayland bar for Sway and Wlroots based compositors.

  • Enable support for tray

gui-wm / sway : i3-compatible Wayland window manager

  • Enable support for StatusNotifierItem tray specification

lxqt-base / lxqt-panel : LXQt desktop panel and plugins

  • Build tray plugin

media-sound / qmmp : Qt5-based audio player with winamp/xmms skins support

  • Build tray icon

net-news / liferea : News Aggregator for RDF/RSS/CDF/Atom/Echo feeds

  • Enable support for Tray Icon (GNOME Classic) plugin that display a small system tray icon to hide/unhide Liferea