This is the first I heard there is a Nim fork. It's not a bad sign. Another
language I often use is awk and that has dozens of varieties since its creation
in the 1970s. The One True Awk is the version specified in `The AWK Programming
Language`, by Aho, Kernighan, and Weinberger. For a long time, this is what
most used since it was the one created by the creators. Eventually creators
retire, die, loose interest. The version most common now is GNU awk because
it's a Posix tool installed on every Linux distro. So languages go through life
cycles. The creators of Nim are still young, "The One True Nim" doesn't need a
name, and maybe never will. If Nim was a specification described in a book that
would be something to give to the world: here we present you with an idea, go
forth and multiply.