You’re kidding right? That’s not what the support matrix on the Zig site shows. Plenty of CPU archs in Tier 3/4. No support for Alpha, HPPA, M68K, Sparc, or SuperH.

"portable" and "has ports" mean two different things. there might be targets Zig doesn't have great support for yet but what I meant is that bootstrapping a target to Zig is a simpler endeavor than it is for C