these 3 derivations will be built:
  /nix/store/dzmr8if4ancb2v6fyp2snvg0izy18s8j-toon-format-0.6.1-vendor.drv
  /nix/store/sd6nq5fa2xm28ljvhq8nvwws4g06mii7-toon-format-0.6.1.drv
  /nix/store/shrbgi6b2zxvza5b7nkf7095yhv0di8i-check-toon.drv