I’m just now reading How to Build a Brain. I was excited to hear the description of Nengo 1.4, which (according to the book) was simply a matter of downloading a zip file, unzipping it, and double-clicking the application icon.
However, since then it has apparently devolved into a pure Python program that must be installed with pip and then run via Python (and depending on having a bunch of other stuff correctly installed). And not surprisingly, when I follow the directions I just get two pages of stack dumps.
Is there any chance of getting a neatly packaged, self-encapsulated GUI app again?
Barring that, is there anywhere I could download Nengo 1.4 (for macOS) so I can follow along with the book?