these 4 derivations will be built:
  /nix/store/8q5yf2ygyjrhf0p3zxb7wvh1ba44zjyq-iets-0.1.0.drv
  /nix/store/dqgwizphfcqf896ppwcw18bnaqz1iqfc-iets-fuzz-diff-0.0.0.drv
  /nix/store/zjavzrlyam8jl9kh0ika67i1d2294flj-iets-conformance-adapter.drv
  /nix/store/0sk841v1mgbd2czv2ypk39idfl68fn7m-nix-conformance-iets.drv