Thank you for the link, but I can reasonably expect that Qt bindings for Nim either exist or will become available soon, as most languages that get any traction get them. I still don't know, however, if it's a good choice to try and put a GUI app together in Nim. Will it surprise me with a huge binary, like Rust does? [1] Will it be easy to develop in it on multiple platforms? I can find all those things myself, but in the spirit of what the OP describes as putting the best foot forward, I'd like to be able to quickly assess whether the language is potentially a better choice to solve my next problem than those I already know or am planning to learn.

[1] - http://endl.ch/content/cxx2rust-pains-wrapping-c-rust-exampl...