these 2 derivations will be built:
  /nix/store/kjlpqd72gdlm26gqbwwnr8c9jqzwyxfg-mcptoon-0.8.23.drv
  /nix/store/ib0h9i4f7rgqy65v3rcizrdz9a0q5bzy-check-mcptoon.drv