Window rule: Close when focus lost

[gro-david]

I trying to create a text based application launcher for the terminal. I will be doing this by executing alacritty with the title 'alacritty launcher' and then executing a command in it (this is easily done and works well). I have added a window rule which makes any window with this title float, this is also working. But I want this window to close when the window loses focus. This could be (afaik) easily implemented using a simple window rule.

[YaLTeR]

Window rules aren't really for that and don't really work this way. They are not "run this command when this event happens", they are "when the window is in this state, this setting should be set to this value"

[gro-david]

Oh, okay makes sense. Do you know any way of achieving what I am trying to do?

[YaLTeR]

You could probably make a script that listens to the niri msg event-stream IPC and when your window is unfocused, sends niri msg action close-window --id ID to it