these 3 derivations will be built:
  /nix/store/slrfnz5a6dq4x670zvqw0aijgi995fld-iets-fuzz-diff-0.0.0.drv
  /nix/store/fmwg7j9s2pa960dyqy6i01w56wjq4f83-iets-conformance-adapter.drv
  /nix/store/3wzpmm5x0vbbn3dcbw2k9pfq2k2spl6z-nix-conformance-iets.drv