these 4 derivations will be built:
  /nix/store/h3m3y0if55nzk12skd81yg7y38qjnaa0-iets-0.1.0.drv
  /nix/store/y188jzmaxq1dhkcmwb102l4xckbbgqjx-iets-fuzz-diff-0.0.0.drv
  /nix/store/li2dnynijwczh0y8hlddsd767m3zb4x8-iets-conformance-adapter.drv
  /nix/store/1282zknyrf7a1qdl07vf7msf4jwl6bvc-nix-conformance-iets.drv