these 2 derivations will be built:
  /nix/store/86qjswk0i9k30hlzfns6a83ickf2wvmh-nix-grpc-store-0.1.0.drv
  /nix/store/3q1d05a5a7d35gs4xqagba09x5ph4a1m-nix-grpc-store-dispatcher.drv