these 4 derivations will be built:
  /nix/store/805ldycdwdvcp8gyi9g73m5fbm48hazq-iets-fuzz-diff-0.0.0.drv
  /nix/store/byjzrnh28kds46d7hiqx42nxy90x9px3-iets-0.1.0.drv
  /nix/store/s78i2jcvi0rssq1hl88k256vzk829r8w-iets-conformance-adapter.drv
  /nix/store/y2g3736qd1qz864i3hk1zqcsn86hpvyf-nix-conformance-iets.drv