these 3 derivations will be built:
  /nix/store/ckm9q1430n9qvnrcpmny2m7h8r6pb75y-source.drv
  /nix/store/1kij1fmax85kydabgs0df4a783g5jgbn-plannotator-0.28.17.drv
  /nix/store/sd5pib4w2xz636cigbhcy8wn8nc17m1c-check-plannotator.drv