In reply to @guttural666 "at the moment I'm": Ah , you worry mostly about the
code itself rather than it blowing up on you. I mean if this works for you,
that's okay.
Also I wouldn't worry too much about actually redrawing the UI.
Owlkettle iirc mostly just updates existing widgets with values rather than
actually doing a re-render.
Basically you have your widget object, which have state in GTK.
Then you have counterparts of them in owlkettle. All a redraw does is sync the
nim-state into the GTK state to update it.
That should be not that expensive.