these 4 derivations will be built:
  /nix/store/d1w1009xv8b9k2c1sy6j0hrasr38rg5z-iets-fuzz-diff-0.0.0.drv
  /nix/store/zf8zg5l3xqpfgspzyg18b749224zhdkr-iets-0.2.0.drv
  /nix/store/cy5fsxz9n53h48njqywz166v2yrq8rj9-iets-conformance-adapter.drv
  /nix/store/phfvg1sik2bnpl4fi4hpmfpscqn6gwgk-nix-conformance-iets.drv