these 2 derivations will be built:
  /nix/store/ymyrc08kvngq1zwphqqqsscn1gjf30kc-nix-grpc-store-0.2.3.drv
  /nix/store/3fd8pyz5av89gax09xy7xaj1h2in89f9-nix-grpc-store-dispatcher.drv