In the last weeks I learned some Rust. As an larger exercise I plan to convert my tiny chess game from Nim to Rust. So as a warmup, I just tried to convert a tiny Nim GTK4 example (GTK4 for Graphical User Interfaces) to Rust. GTP-4 was able to fix all the remaining issues, see
https://chat.openai.com/share/de2d5f23-7e0f-403e-be27-b7fe66622f5e