these 3 derivations will be built:
  /nix/store/l0kkxarrq2zqmkn5479790ldbnq96mfk-iets-0.1.0.drv
  /nix/store/x2pvx75mx6938zh1z5fw14szssz9h6y0-iets-conformance-adapter.drv
  /nix/store/24im46dxx75dhgjcaclbyf2ks6r4xvv0-nix-conformance-iets.drv