these 4 derivations will be built:
  /nix/store/kicxvz5qd0b5z6cypl4nc1955bg2jhzq-iets-0.1.0.drv
  /nix/store/y2gxfpzcc9c9h5g9xhncfw6sjhs4pfdp-iets-fuzz-diff-0.0.0.drv
  /nix/store/vl1vgbw2id3lq25m32n6xnf6ps3s72rl-iets-conformance-adapter.drv
  /nix/store/hn5qrw3c6kfqm1jyca5n1advzfy995dy-nix-conformance-iets.drv