> a plan to transition to it for C compilation
That's not planned AFAIK (see https://github.com/ziglang/zig/issues/16269). `translate-c` is really only intended for header translation, not C source code.
See https://github.com/ziglang/zig/issues/20875 for the (not fully fleshed out yet) plans around C compilation.
Zig already uses arocc! https://codeberg.org/ziglang/zig/src/branch/master/lib/compi...
Thanks for the correction, I knew I was about 2 decisions out of date when I had the impulse to write my post, but my research to fill in my blanks was a bit faulty. I added the 2nd paragraph and "plan to" ending of 1st as an edit because I thought I had learned enough good info when writing the rest, but I was wrong.