these 2 derivations will be built:
  /nix/store/8icwqzdkb5k4md502cq60kn120kjhkz4-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/cmdfiifw3jachqnl7alwq6papfsqrygm-nix-grpc-store-dispatcher.drv