these 3 derivations will be built:
  /nix/store/5z8rxr63qs58q7l5pnpqwa5i342sscan-iets-0.1.0.drv
  /nix/store/9xi1ia6rmi4rw43zcjx0a1c8f528wax5-iets-conformance-adapter.drv
  /nix/store/xw7s0n4aqsnixdsi8s97s275jpq7c34x-nix-conformance-iets.drv