Building a new language in a new language (zig) is quite the choice. Usually you choose your host language to leverage some aspect of its ecosystem — whether that be a VM like JVM, or a standard library, or something else.

The other reason would be that writing a language takes time, measured in years and decades. Usually you would pick a well-supported language so that you can be assured it won’t disappear before you’ve finished yours.

I’m only just looking through the project now, but would be interested in finding the author’s rationale for writing this in Zig. Seems like with Zig you wouldn’t get any of this, so I’m wondering why go this direction.