This approach sounds interesting and I think something like this is what we should focus on to bring UI frameworks to new programming languages (in the short te

This approach sounds interesting and I think something like this is what we should focus on to bring UI frameworks to new programming languages (in the short term). Let's not throw out all the work that went into Gtk/Qt but instead embrace it. Bindings/wrappers that are idiomatic in the target language. Maybe including a small state or declarative layer and lean on the framework for rendering, input events, windowing, accessibility, etc. Another example of this approach is TornadoFX which is a declarative Kotlin DSL on top of JavaFX.