While working with the wxWidgets mapping for Nim we discussed the possibility for creating a cross-platform GUI toolkit in pure Nim using the bindings for the various platforms' toolkits. But apparently somebody beat us to it! Haven't done much more than running all the examples but I must say it really looks good so far. File sizes are very small (dynamically linking on Linux at least) and the results look good. Very interested in seeing where this will go and look forward to digging into the code interface and hopefully implementing my
genui macro for this as well!