these 2 derivations will be built:
  /nix/store/mvl4adhnd3k86210gs8f84f58aqf3zh9-nix-grpc-store-0.1.0.drv
  /nix/store/i0qh0ikz5mplv5w4lp4xnjnxmrj0wvdd-nix-grpc-store-dispatcher.drv