these 3 derivations will be built:
  /nix/store/wq0bl4zjkmgg8xchxypmyxdy3d29ks5b-source.drv
  /nix/store/iynkbnprsl076pnj55w8d0ydgy4f8piy-herdr-eternal-deps-0.1.0.drv
  /nix/store/ampbynf2zc7xqgpw1z9bz5kyg6qsbckv-herdr-eternal-clippy-0.1.0.drv