nixos-config/nixos/components/network/wireguard.nix

{ lib, config, ... }:
with lib;
{

  options.wireguard = {
    wg0 = {
      #ipv4 = mkOption { type = types.str; };
      subnet = mkOption {
        type = types.str;
        default = "10.100.0.1/24";
      };
    };
  };

}