these 4 derivations will be built:
  /nix/store/950r15pz96v6sgb8zv5dgc9i7k13j120-iets-fuzz-diff-0.0.0.drv
  /nix/store/xfwc6wrx5h5ag22vndkifp7lhy0qq6j9-iets-0.1.0.drv
  /nix/store/2hx59f9vpb7xa4i7cvb3x10z297507mc-iets-conformance-adapter.drv
  /nix/store/w5kapxpck6hp5kvhlp1s0p67dy11222m-nix-conformance-iets.drv