Although aw-watcher-window does not support Wayland, there is aw-watcher-window-wayland, and I'll also soon publish aw-watcher-gnome (mentioned here). Also, some people may just use ActivityWatch with other watchers that don't depend on the display server, eg. the browser or editor watchers.

So it would be good if the tray icon worked on Wayland.

Relevant issue with workaroud

Workaround

the libgio-2.0.so.0 bundled with the application is old and is requesting a key which is not present. I deleted the bundled lib and got the tray-icon to work.

Edit: Also thank you for implementing a watcher for gnome. I may finally be able to use ActivityWatch.

It appears the binary aw-awatcher from https://github.com/2e3s/awatcher can act to replace aw-watcher-afk and aw-watcher-window

Even though https://extensions.gnome.org/extension/615/appindicator-support/ is installed, as per the suggestion in the documentation, there is another error thrown:

.local/opt/activitywatch/aw-qt: symbol lookup error: /home/yala/.local/opt/activitywatch/libQt6WaylandClient.so.6: undefined symbol: wl_proxy_marshal_flags

This is the same error as reported in ActivityWatch/activitywatch#710 (comment), but raised from another library.