these 3 derivations will be built:
  /nix/store/y2syqn1hgw9hkmhxawinbjivrrcjf3fl-source.drv
  /nix/store/pcj7w6fw5rjwvsc880vbmqma00a65bm9-plannotator-0.28.50.drv
  /nix/store/8bsy6zjbfbkrpm2ibhc0mgnhx1z378mw-check-plannotator.drv