these 3 derivations will be built:
  /nix/store/x33hgrg5dxbwjlq8j27lmnvx1qdq28iq-pi-src-with-lock.drv
  /nix/store/9f9hws5bcqi1f2a6kl7v1xjj2g48pgrb-pi-1.0.0.drv
  /nix/store/j8kw5pyrp5z1z6q9dvr76n6yiyzj2152-check-pi.drv