these 5 derivations will be built:
  /nix/store/da5qcs1snlihs0bgby204iqd2sq6jyid-source.drv
  /nix/store/r1a3krm5s4cj8zg7qdjpjd9r613j0ahd-ironclaw-1.4.1-vendor-staging.drv
  /nix/store/y6c6a2bmamv100s6jbz11rni41f6m8xm-ironclaw-1.4.1-vendor.drv
  /nix/store/7rz2hy45awh7fhir9li935jwky2kmdnb-ironclaw-1.4.1.drv
  /nix/store/ppnsj3p3z2kcd4fminc3wdbgsav57cp1-check-ironclaw.drv