these 2 derivations will be built:
  /nix/store/cbpda7n3ngjdq8ypmy9rdg9wicd77bp5-nix-grpc-store-0.1.0.drv
  /nix/store/j3f4kkq6xj37xqxg4xfkpqwlraprqj6z-nix-grpc-store-dispatcher.drv