these 4 derivations will be built:
  /nix/store/6x69lxx3h3zbfzz9p4jp4yp2lnkcz0lm-iets-fuzz-diff-0.0.0.drv
  /nix/store/wc5j1njwljb9v2ywg6wgdgrpykcfjwk5-iets-0.1.0.drv
  /nix/store/cc8wv7vda1r99bmhm77l778v72h03fgv-iets-conformance-adapter.drv
  /nix/store/9jwbj5wk9vv76kg4kznmsp27x3x4a77y-nix-conformance-iets.drv