these 2 derivations will be built:
  /nix/store/nj0b1vwlalwgq6rik4vjp56biy4v9bi6-mcptoon-0.8.24.drv
  /nix/store/caxn5z7h18kf3m2h1fskizv8xrwdwkcn-check-mcptoon.drv