these 2 derivations will be built:
  /nix/store/x90ak3dhip77crz4jxgqbjqdjnpgf3gl-nix-grpc-store-0.2.3.drv
  /nix/store/h5d7hsv84sjbzwwi1zqcbjrbhs2ja3p2-nix-grpc-store-dispatcher.drv