these 4 derivations will be built:
  /nix/store/10fg2j6d756y3y559pxw1fvq61kv5b7g-iets-0.1.0.drv
  /nix/store/kmf05zidc7knv8slrpxcg1r5bp38hcz3-iets-fuzz-diff-0.0.0.drv
  /nix/store/sfwnj1p2yyhnmfzw7hxp9y6l2vrgk41c-iets-conformance-adapter.drv
  /nix/store/bs2s329a5i8x0gl04mmqji15mvmnvh94-nix-conformance-iets.drv