One more gintro example:
https://github.com/StefanSalewski/nim-chess4
Installation is much easier also now. A really one command install does not work yet due to still unfixed nimble bug 280, but install takes only a few commands.
Binary size has grown from 108k to 132k due to high level GUI API. Engine is still identical to version 3.
I also added a cairo drawing and animation example to the gintro tutorial, see bottom of
I have just uploaded latest version of gintro to github.
The two reported bugs should be fixed now. And automatic memory management should work for the GTK boxed types also now. Chess board and the demo apps compile fine with Nim v 0.17.2 on Linux 64 bit. Now we have to do more testing and manually extending the cairo module...