these 2 derivations will be built:
  /nix/store/h8ylz49b8v07mb5k76d8xsicqh3qhhd2-kandev-web-0.91.0.drv
  /nix/store/rb902hasaygcz73ckpzy7xqwgmqzqsi3-kandev-0.91.0.drv