these 2 derivations will be built:
  /nix/store/yj77qgy5b567ab3wl84cj4mxkl2ny63m-nix-grpc-store-0.2.3.drv
  /nix/store/dkckm6xgsxlxxw3siba97pmwlixm2bfc-nix-grpc-store-dispatcher.drv