these 4 derivations will be built:
  /nix/store/6jjs1p158sbdi81jbw6h7vdhgdq5fjsi-iets-0.1.0.drv
  /nix/store/yca8a6pyk9cmkyai0by0n537c9dgs69l-iets-fuzz-diff-0.0.0.drv
  /nix/store/jfyfzhiifgqx14wfb1ap1c8i68bi6hfl-iets-conformance-adapter.drv
  /nix/store/v68zna1cv40w8kyyhlznv9m0lrs0szxs-nix-conformance-iets.drv