these 3 derivations will be built:
  /nix/store/8g36521kzkpvz8cfisz95xi24p8f1b2d-pi-src-with-lock.drv
  /nix/store/s9jpp1am99fi3k85bc90sa559j8bxxlx-pi-1.0.0.drv
  /nix/store/ng43jjd9v2pkc92nfpq78mb0yz1scxrw-check-pi.drv