One of the requests I received at RubyConf 2024 for Glimmer DSL for LibUI (and other Glimmer desktop gems) is providing an editor that can update the GUI live as the programmer types code into it. I have built something like that before for a programming language for kids called DCR actually. https://raw.githubusercontent.com/AndyObtiva/dcr/master/images/dcr-demo.gif Continue reading blog post: https://andymaleh.blogspot.com/2024/12/the-dcr-kids-programming-language.htm... Check out DCR (Draw Color Repeat), which is built in Ruby using Glimmer DSL for SWT: https://github.com/AndyObtiva/dcr