Yeah, I think the use-case should be totally in scope for zig as a whole — being able to low-friction curl stuff from the internet, with build-in caching and checksum verification, is great for a dependency-zero tool: with only the kernel, the zig binary, and the internet access you could bootstrap the entire world!
But it feels potentially unfortunate to mix the two actually quite different use-cases in the single subcommand, as it could be confusing .