these 4 derivations will be built:
  /nix/store/mgqwdjd037g975r5f91s34fmdfyd22g3-iets-0.1.0.drv
  /nix/store/p8c1dyi8317gcq5d31s7mq0dzj90rp7f-iets-fuzz-diff-0.0.0.drv
  /nix/store/vqw7fjp8bs51rlbwv2ihcc7l95cx8n0l-iets-conformance-adapter.drv
  /nix/store/vvckk3jkpjg0dkqn3jcp13rpjy2cmvxk-nix-conformance-iets.drv