these 2 derivations will be built:
  /nix/store/54cp9mk9hnlz6z8i2scc5d70kcrqn8pk-iets-deps-0.1.0.drv
  /nix/store/8ywfdiyh7pqbh3w287yk00x1d8iyzq7g-iets-test-0.1.0.drv