these 3 derivations will be built:
  /nix/store/1s947v6ckxc3vnks7m6117jkbnqh3gc4-source.drv
  /nix/store/mhkh8jxd7k6afkf1i9gwyf5lkxj0xi1l-plannotator-0.28.49.drv
  /nix/store/sk83n5iyfnb0h7k3gb725pcjxqlc37ia-check-plannotator.drv