these 4 derivations will be built:
  /nix/store/1730mmrkvbki81qqr04fqczai3fmhq3j-iets-fuzz-diff-0.0.0.drv
  /nix/store/ppmgdmn16zkzynksd03qyhym3z1b9pgq-iets-0.1.0.drv
  /nix/store/p7n15gp3rr43g3fri4icq6rzq2dv0zlj-iets-conformance-adapter.drv
  /nix/store/b22lrh1kcdi2sh8z4hifggv8ynhcvc4a-nix-conformance-iets.drv