Repeater Contextproperty Model not usable if Contextproperty index is used

[Redman]

Hi,

This works fine

 Repeater {
            id: rep
            model: deviceModel // <- QAbstractListModel

            delegate: BaseDevice {
                dev: model // <- WORKS
            }
 }

This doesnt, since model is not recognized anymore and can not be accessed during runtime

 Repeater {
            id: rep
            model: deviceModel // <- QAbstractListModel

            delegate: BaseDevice {
                required property int index // <- BC OF THIS
                dev: model // <- DOESNT WORK ANYMORE
            }
 }

I know the functionality is exclusive, so either use index or model. Both achieve everything you need.
But why does it behave like that?

[GrecKo]

Because context properties are more ambiguous and have a less performant lookup. A decision was made that when using required properties context properties are disabled to avoid this overhead.