these 4 derivations will be built:
  /nix/store/h3kbvwwfb0v3jif887xlw05qkkmz1hjc-iets-0.1.0.drv
  /nix/store/ki18vsij51x01nvafmnrw2rzanapqarj-iets-fuzz-diff-0.0.0.drv
  /nix/store/n1ynsfm9759dxiz5ikq73dyj7gb8db83-iets-conformance-adapter.drv
  /nix/store/v1s9jr5jhav93j1c1fxpj085g408cjkp-nix-conformance-iets.drv