these 4 derivations will be built:
  /nix/store/55g9vygq1nxv4abbyc1xybci60h1z7bz-iets-fuzz-diff-0.0.0.drv
  /nix/store/jb0g9ln7wjw0zzpcylbr8v14siw32myb-iets-0.1.0.drv
  /nix/store/36f7vahlyf6xla7crwi4akvh2qbvip82-iets-conformance-adapter.drv
  /nix/store/r7fxpci31ky7a7z11a855d11fklgsrrp-nix-conformance-iets.drv