these 4 derivations will be built:
  /nix/store/4j47kqk434mp6gvv8imqgdgb5f059gpp-iets-0.2.0.drv
  /nix/store/6xkm0hyni22p81rcw462fcr1dm35j0zh-iets-fuzz-diff-0.0.0.drv
  /nix/store/2kg0gy63qp9ycch8615lfhl8j5b58w5p-iets-conformance-adapter.drv
  /nix/store/lav11gkv6za904j8nsjnz2b9r307zb86-nix-conformance-iets.drv