these 3 derivations will be built:
  /nix/store/dnzjmq7s3xln7a0x3cn0x2q127vigwk6-source.drv
  /nix/store/ma69gqgmx7867n1n90ql1rb6f7j9jmgf-mcptoon-0.8.24.drv
  /nix/store/aadikyyny319843791f33wdxjgz6b3jw-check-mcptoon.drv