Awesome WM で systray を screen 1 以外に表示したい

```lua

-- ~/.config/awesome/rc.lua

awful.screen.connect_for_each_screen(function(s)

-- ...

if s.index == 2 then

wibox.widget.systray():set_screen(s)

end

end)

```

https://github.com/kaosf/dotfiles/commit/4b8513cbb611e7b4cadeba3efdbfea29a551e360

ref. https://gist.github.com/linguisticmind/b8a9d268a29b7f1a4b0037ecd0a7fe74

via https://www.youtube.com/watch?v=FfYWVOFUJJU

via https://www.reddit.com/r/awesomewm/comments/u5pg7c/make_system_tray_visible_on_all_monitors/