these 2 derivations will be built:
  /nix/store/qj5flmcwphqkvlnwvbzj1zndniwgw523-nix-grpc-store-0.1.0.drv
  /nix/store/d5mk8d6fnq0adsv0v9n7b6xdkkbxrbif-nix-grpc-store-dispatcher.drv