these 4 derivations will be built:
  /nix/store/s570w15dmcqas6gkkhf4ycf5ab1cnv6k-iets-fuzz-diff-0.0.0.drv
  /nix/store/xvcjfan9pg7d74iv01frkcd47im5sg90-iets-0.1.0.drv
  /nix/store/r4ln0i3m4s0pkxajhjra79v4zpl3ppvn-iets-conformance-adapter.drv
  /nix/store/s7c0pwsa53ljl4afq3d9c8bm2rlj1qwj-nix-conformance-iets.drv