these 2 derivations will be built:
  /nix/store/q1gk4szha8y2s919cm62pm10qyvfwymy-nix-grpc-store-0.2.3.drv
  /nix/store/6qjbyprqznx51wrnk80b92h9h879rws8-nix-grpc-store-dispatcher.drv