these 4 derivations will be built:
  /nix/store/c95q25cdkrrgv3gl73r8p59z5gc6li8w-iets-0.2.0.drv
  /nix/store/nnx76qxvf8yv0fxhiq8242i36ynm7hdm-iets-fuzz-diff-0.0.0.drv
  /nix/store/mysimn5a9bg5jrb9yv9vz451gpl2g53c-iets-conformance-adapter.drv
  /nix/store/bbzprp4clddq57fldacc9fzwcvsmj0x0-nix-conformance-iets.drv