[appveyor]

Hey, this is exactly how https://flet.dev works! :) There's a UI server written in Go, you write your program in Python which manipulates a virtual DOM with commands via WebSockets, and there's a Flutter client that renders UI from that DOM: https://flet.dev/blog#current-flet-architecture

I'd love to add other languages, but currently so busy with a top-notch Python support!

[apatheticonion]

This is great! Looking into it - thanks for sharing