Setting rounding in window rule produces an error but works directly

[imcrazytwkr]

Hyprland version

v0.56.1

Is this a regression?

Not sure, haven't used Lua config before 0.56.1

What's the bug?

I have a window rule for setting rounding of specific windows to 40px. It works fine when I force usage of hyprlang-format config but when I ported the window rule to Lua, I get a hl.window_rule: field 'rounding': value 40 is more than the maximum of 20 error. This limit isn't mentioned in the docs (or at least I couldn't find it in anywhere there).

Reproduction steps

1. Add a window rule that sets rounding to any value over 20 and save the Lua config
2. See the error message

Minimal rule that consistently produces an error:

hl.window_rule({
    name = "rounded-floating-terminal",
    match = {
        initial_class = "foot",
    },

    rounding = 40,
    center = true,
    float = true,
})

Hacky workaround (if the rounding limit was intentional, it needs to produce an error too but for now it works):

hl.on("window.open", function(w)
    if not w or w.initial_class ~= "foot" then
        return
    end

    hl.dispatch(hl.dsp.window.set_prop({
        prop = "rounding",
        value = "40",
        window = w,
    }))
end)

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[vaxerski]

it was intentional but I guess 20 is a bit too harsh

[vaxerski]

#15756