these 2 derivations will be built:
  /nix/store/766jpgnlpznqnbjgmzycmrqj8blrmzww-nix-grpc-store-0.2.0.drv
  /nix/store/n4x9m5zr8b3n053xgvn1gga4xfw5zwdc-nix-grpc-store-dispatcher.drv