Always wanted a single execute variable declaration.

[LurkAndLoiter]

Haven't looked at other people's implementations in a while so not sure if this is a common method but ended up writing a clever way to make a highly reactive low background toggle button. Just wanted to share. This implementation simple toggles Hypridle on or off.

(defpoll ifHypridle
  :interval 36000 ;we update in onclick this is just to populate initial value.
  :initial false
  `pgrep -x hypridle >/dev/null && echo true || echo false`)

(defwidget hypridleButton []
  (eventbox
    :onclick `(if pgrep -x hypridle >/dev/null;
                then pkill -x hypridle >/dev/null 2>&1 &&
                eww update ifHypridle=false;
              else hypridle >/dev/null 2>&1 &
                eww update ifHypridle=true;
              fi) &`
    :tooltip "Inhibit Hypridle"
    (box :space-evenly false
      (label :text "${ifHypridle ? "Idle" : "Inhibit"}")
    )
  )
)