these 4 derivations will be built:
  /nix/store/n18wfw1hg7mdp69vqkyl7nx9x3za443m-iets-0.1.0.drv
  /nix/store/zw2p558vzc70g2g8h0yf82s88cwh7pjr-iets-fuzz-diff-0.0.0.drv
  /nix/store/swazkw6s09bb8i9hqmglqc3aq06h60ps-iets-conformance-adapter.drv
  /nix/store/99fnnsmd2c2lg7a8g7jfpwlwc6b102lz-nix-conformance-iets.drv