these 4 derivations will be built:
  /nix/store/kw70m1a4hmjnfp27ypr3as9v10rh2rmf-iets-fuzz-diff-0.0.0.drv
  /nix/store/vaxkxvvi05az6y8rlvs5f4ysh8ybg8nq-iets-0.1.0.drv
  /nix/store/crw0287dm2sgrz4mzh5xp5dr43776d2n-iets-conformance-adapter.drv
  /nix/store/c64i8l6bmhyg2c0rkg854c44qrr5440d-nix-conformance-iets.drv