these 4 derivations will be built:
  /nix/store/j7pkmf2znf65qynpglj3sf1g5mv0ji4h-iets-0.1.0.drv
  /nix/store/k8xj56xsm4wxxw6r7hb4jw6cqsvxx8l8-iets-fuzz-diff-0.0.0.drv
  /nix/store/8mhpdyf7yc87nk3dvaynhglwc9dhmdvh-iets-conformance-adapter.drv
  /nix/store/i4pni460xz2ciijr0mvlcw1vr6k883dl-nix-conformance-iets.drv