these 3 derivations will be built:
  /nix/store/xp6i3ik847krfhxx1ykfqk8aimi39cj3-source.drv
  /nix/store/l852z5qw0fd842w6my3h1w13i0jlpfyk-herdr-eternal-deps-0.1.0.drv
  /nix/store/1wy1jf68nh3c7drz32c0bsiraawwbpkh-herdr-eternal-clippy-0.1.0.drv