these 4 derivations will be built:
  /nix/store/vwzsn0xxfxriyzkwg9sr009fnq0i99hk-iets-fuzz-diff-0.0.0.drv
  /nix/store/vyjmb1f9j6j7slifrmxa48pvkf0mrl6n-iets-0.1.0.drv
  /nix/store/d5q8gb18hlr5wq4yfl9f8mgcjlhd21i1-iets-conformance-adapter.drv
  /nix/store/nvrfpjllgvlh8syk1x4hrfbb84g1lp3y-nix-conformance-iets.drv