these 3 derivations will be built:
  /nix/store/pdwijsbx2j0cbsszppyzwhpr5sazw03q-iets-0.1.0.drv
  /nix/store/cqdkkqirymc80jbp6gv8rcxahi9cl70z-iets-conformance-adapter.drv
  /nix/store/ljzjf46g9l5a7w43ksn424yccgwn6g1d-nix-conformance-iets.drv