these 4 derivations will be built:
  /nix/store/pg272yzxlja5rzcka7zdfr1rmp1vr8d0-iets-0.1.0.drv
  /nix/store/vdzyrw58d0ikgdnlq7phn3r6b4kpfsdf-iets-fuzz-diff-0.0.0.drv
  /nix/store/im4wax8g7jk4i5r43p43v63461bn88gz-iets-conformance-adapter.drv
  /nix/store/iryn994388zdhgb3jabg7xv67ach0djb-nix-conformance-iets.drv