these 3 derivations will be built:
  /nix/store/amkn9wcki0cv6wj7h9dnfbnsll7an05f-toon-format-0.7.0-vendor.drv
  /nix/store/xfqjjn60sfvgk0g48y2pcwgirb460ba0-toon-format-0.7.0.drv
  /nix/store/1m8vz2jr14h1ln8kmlr3rmfn30n5zfbf-check-toon.drv