these 2 derivations will be built:
  /nix/store/ah233h5qsrxppr9xvj8frkip717scwxh-nix-grpc-store-0.1.0.drv
  /nix/store/2vgxm8fjkrrwirk4xfg9ac9qiqgaccz5-nix-grpc-store-dispatcher.drv