these 3 derivations will be built:
  /nix/store/7rgl80437xl54hbffk2f09393nlj4jlw-iets-0.1.0.drv
  /nix/store/hkcxfxdnv8h6gdhf3xd565vs7dxsinp0-iets-conformance-adapter.drv
  /nix/store/b006v4day0sm3sylyrk4p6z08608i2bq-nix-conformance-iets.drv