main: set subsystem in `zig builtin` when explicitly provided
main: set subsystem in `zig builtin` when explicitly provided

raulgrell/zig,raulgrell/zig,raulgrell/zig,andrewrk/zig,raulgrell/zig,andrewrk/zig,zig-lang/zig,zig-lang/zig,zig-lang/zig,raulgrell/zig