these 4 derivations will be built:
  /nix/store/xx3vl99sgixaff5lfz6421vks42jd6xf-iets-0.1.0.drv
  /nix/store/yc2rdmymbl9lgz5z3yx264446kk7s8k8-iets-fuzz-diff-0.0.0.drv
  /nix/store/qhk3434ccrr6avmdsw01gsy0815kfxdi-iets-conformance-adapter.drv
  /nix/store/3hf2g51wwqhijc7l8bhm6bl13saqkn8i-nix-conformance-iets.drv