these 4 derivations will be built:
  /nix/store/7hvd4sc268lwda1vd0g25f0r74r500lg-iets-fuzz-diff-0.0.0.drv
  /nix/store/vw3aw7kql8vacyafj18y5cx1647yyb1h-iets-0.2.0.drv
  /nix/store/lzm6iaal56imxnmzjxfjp16pjhlwsm2b-iets-conformance-adapter.drv
  /nix/store/ma5cf45hxnx1mq1kcmrxcc7b1pfv5jls-nix-conformance-iets.drv