these 2 derivations will be built:
  /nix/store/0cfaiax3cxdqlrpdj0girwz2p2j52b71-nix-grpc-store-0.2.3.drv
  /nix/store/gr8vk2vb555vjf3i4ybga4v98z45rrn7-nix-grpc-store-dispatcher.drv