What's the point of this error (not a compile one, thankfully)? What if I want to pass separate modifiers and then apply them conditionally?

Shouldn't the caller pass the proper modifier instead of passing both?

That's a good idea. Maybe I just don't understand how to handle orientations properly. I ended up not needing a separate parameter, but I had something like

@Composable fun Main() {
    when (LocalConfiguration.current.orientation) {
        ORIENTATION_LANDSCAPE -> Row {
            Other(weightModifier = Modifier.weight(1f), modifier = Modifier.fillMaxHeight())
        }
        else -> Column {
            Other(weightModifier = Modifier.weight(1f), modifier = Modifier.fillMaxWidth())
        }
    }
}

@Composable fun Other(weightModifier: Modifier, modifier: Modifier) {
    val someSetting = false
    val m = modifier.then(if (someSetting) weightModifier else Modifier)
}

I thought the

someSetting

is irrelevant on the level of

Main

.