these 4 derivations will be built:
  /nix/store/fl955q6iq4pb7gs6bpmapqyg9lx77f09-iets-0.1.0.drv
  /nix/store/n8rixr18c5xrpzwxmm7wmcl752wvbg9r-iets-fuzz-diff-0.0.0.drv
  /nix/store/3rjw4d2s399cp56k68myns5dajqsp7qy-iets-conformance-adapter.drv
  /nix/store/6d5sg0gyx8hbw8z8bd0q9d3rcwbhlkw7-nix-conformance-iets.drv