these 4 derivations will be built:
  /nix/store/clprz153jp8f8br5bqw71ylljcsnlyl3-iets-fuzz-diff-0.0.0.drv
  /nix/store/l4mj5417fyfdfd36qmvaqbd7sl0i81vv-iets-0.2.0.drv
  /nix/store/0qpimimkn8mrg0ni9l2k5nhzla6cplsy-iets-conformance-adapter.drv
  /nix/store/5mbb5va03gphdqjpdxk92nhybaa5wdhh-nix-conformance-iets.drv