these 2 derivations will be built:
  /nix/store/azk9l4qg8sqsbblkvzkg6ry65dgm44cf-nix-grpc-store-0.1.0.drv
  /nix/store/ghmyjzq74rdh0i84khkr5cf3q64rrv9h-nix-grpc-store-dispatcher.drv