How to see output of custom build step?

I’m using a custom build step called “precompile” to generate some Zig source files with Zig 0.16. The precompile step has 2 parts: One part uses a Python script to generate a Zig file, the other part uses a Zig program to generate two other Zig files. This is an excerpt of the build.zig file: pub fn build(b: *std.Build) void { const target = b.standardTargetOptions(.{}); const precompile_step = b.step("precompile", "Generate Zig sources from Python."); const precompile_cmd = b.ad...