these 4 derivations will be built:
  /nix/store/1fkxgmwd6n2j1gm1ddglpjbs7npd886h-iets-0.1.0.drv
  /nix/store/k6i4ibm5sm7c1n2rcbn5kgcy5iqp065s-iets-fuzz-diff-0.0.0.drv
  /nix/store/20ff6c7h7hj72ilz54xi0r0xvjpv5ymx-iets-conformance-adapter.drv
  /nix/store/64s0hq3q8b25cnrgw8ir0yxainmgc8gm-nix-conformance-iets.drv