Zig check step - how to enable live compile errors

zig_check_step.md

Make sure ZLS is installed.

In build.zig, add a check step after exe:

const exe_check = b.addExecutable(.{
    .name = "YOUR_PROJECT",
    .root_source_file = b.path("src/main.zig"),
    .target = target,
    .optimize = optimize,
});

// Add all deps here just like your exe

const check = b.step("check", "Check if it compiles");
check.dependOn(&exe_check.step);

Your ZLS settings must now be:

{
  "enable_build_on_save": true,
  "build_on_save_step": "check"
}

In VSCode, I suggest you also install Error Lens extension to see errors in-line.

Now you should have live error checks!

For full description, read the full article by Loris Cro.