these 3 derivations will be built:
  /nix/store/mn8rkfw2hh387naksmhgyrnfzdwq1vx0-iets-0.1.0.drv
  /nix/store/nnhfg5fmg7pjphr7nvcw6dx8y971nraq-iets-conformance-adapter.drv
  /nix/store/i79k88kj24all8djhpxcp2ybin9qi9wh-nix-conformance-iets.drv