these 2 derivations will be built:
  /nix/store/1z9l4nqdklcrsz1d8gcafa69qdmly34d-nix-grpc-store-0.2.3.drv
  /nix/store/mblnwbg3xxdqjqgsxaf2gqdva8kqq3hc-nix-grpc-store-dispatcher.drv