these 4 derivations will be built:
  /nix/store/6bj238fy6zqfv34nhbr9s0b5pm2v30rk-iets-fuzz-diff-0.0.0.drv
  /nix/store/p3p82awavn41na5xyr29k3219ifga16g-iets-0.1.0.drv
  /nix/store/0lzvadb95lszbmiyard186ggrsabqy22-iets-conformance-adapter.drv
  /nix/store/frkf8gp6a5fylfpk0s54ia4cp9hiv3s6-nix-conformance-iets.drv