If Rust or C++ are possible options, Zig probably isn't what you really want. Rust is especially good if you can keep everything in Rust and make the most of the ecosystem.

I like Zig, but it is a much smaller language that C++ or Rust with more than a few very, very sharp edges. That having been said, I reach for Zig in a lot more instances than I thought I would. I write a lot of relatively small programs that I want to work on Linux/Windows/macOS, and Zig is pretty good at that.

Of course, I miss Rust terribly every time I run a Zig program and get a segfault.