these 3 derivations will be built:
  /nix/store/hf2jnvn75wk8hf9ix9nnkvqqr3fx6iyw-source.drv
  /nix/store/4bnpmszjgn7vyfqp18gl2nbmwmfw72bc-mcptoon-0.8.24.drv
  /nix/store/wn1ldxlq7cvqlmg9zkhy9aixj333vpv2-check-mcptoon.drv