Comment by ephaeton

at "build time", the default language's build tool, a zig program, can reach anywhere and everywhere. To build a zig project, you'd use a zig program to create dependencies and invoke the compiler, cache the results, create output binaries, link them, etc.

Distinguishing between `comptime` and `build time` is a distinction from the ivory tower. 'zig build' can happily reach anywhere, and generate anything.