nixfiles/modules/meta/networks.nix

{ config, lib, ... }: with lib; {
  options = {
    networks = mkOption {
      type = with types; attrsOf (submodule ({ name, config, ... }: {
          options = {
            member_configs = mkOption {
              type = unspecified;
            };
            members = mkOption {
              type = unspecified;
            };
          };
      }));
    };
  };
  config = {
    networks = let
      names = [ "gensokyo" "chitei" "internet" "tailscale" ];
    network_filter = network: rec {
      member_configs = filterAttrs (_: nodeConfig: nodeConfig.networks.${network}.interfaces != []) config.network.nodes.nixos;
      members = mapAttrs (_: nodeConfig: nodeConfig.networks.${network}) member_configs;
    };
    networks' = genAttrs names network_filter;
    in networks';
  };
}