these 3 derivations will be built:
  /nix/store/cl1nv2jk1c7rydhg6pbzxsp05dhxd7xm-iets-fuzz-diff-0.0.0.drv
  /nix/store/7mpgmg8dx3gkcs0c55kl973525zpidyp-iets-conformance-adapter.drv
  /nix/store/nmpabd67mwyk747qn2wbvq2h7xknk2c9-nix-conformance-iets.drv