these 4 derivations will be built:
  /nix/store/5vg6n2gb691h6ldbs2fqxiwayblcqrk6-iets-fuzz-diff-0.0.0.drv
  /nix/store/sy5fnry2frcf7g3adar3bkbmlfc5i7bw-iets-0.2.0.drv
  /nix/store/wlkx91zkxm4c1wpd1z2qm3cyaznki4np-iets-conformance-adapter.drv
  /nix/store/2mvsb0hkb3pzhffc0hjl3phf9dp4n9v8-nix-conformance-iets.drv