these 4 derivations will be built:
  /nix/store/d7jr3dipz12ri2b1cr0gymmgp6vc2vi6-iets-fuzz-diff-0.0.0.drv
  /nix/store/g1a8l6nvcmbd1348hafgvwyl52mry0xp-iets-0.1.0.drv
  /nix/store/3yrm5rx3y05gnl5xgsfrr7lgr8hla78k-iets-conformance-adapter.drv
  /nix/store/f8v8axaqfa67apb97f9k2chcrnrwysjd-nix-conformance-iets.drv