these 2 derivations will be built:
  /nix/store/fk6rh1rkpvvbmn7g3lrbmvj0x7hgfvpm-iets-conformance-adapter.drv
  /nix/store/gspkxj3gcmz1b7x5iya47ync5pmhf1qc-nix-conformance-iets.drv