these 4 derivations will be built:
  /nix/store/pq1v8w26ms4r0f8xkci9608dbh98xagm-iets-0.2.0.drv
  /nix/store/q04y2jpzb8q6333arglr5a1dx0lh48j1-iets-fuzz-diff-0.0.0.drv
  /nix/store/x8m53w3hxn0n37jdj91mww13g2z9a1yq-iets-conformance-adapter.drv
  /nix/store/f1k27zqablck09man057zc1sgc7pfn5k-nix-conformance-iets.drv