these 4 derivations will be built:
  /nix/store/1c19mhh84a8xsg77zbsl640rzlhpd1fy-iets-fuzz-diff-0.0.0.drv
  /nix/store/aqjy255rdxi4yf1a1c2v7k6kyqc381n0-iets-0.2.0.drv
  /nix/store/lgslm9hd4l7njfgs904nk15zn63h142l-iets-conformance-adapter.drv
  /nix/store/b4bqrs7vmprgmazqigv71bhgq2jyz8jz-nix-conformance-iets.drv