small update

modules/system/os/networking/networking.mod.nix

@@ -0,0 +1,52 @@
+{config, ...}: let
+  inherit (config.modules.other.system) username;
+in {
+  networking = {
+    enableIPv6 = true;
+
+    wireless = {
+      # INFO: This disables wpa_supplicant,
+      # I use iwd instead.
+      enable = false;
+
+      # use iwd over wpa_supplicant
+      iwd = {
+        enable = true;
+        settings = {
+          IPv6 = {
+            Enabled = true;
+          };
+          Settings = {
+            AutoConnect = true;
+          };
+        };
+      };
+    };
+
+    dhcpcd = {
+      # faster boot times
+      wait = "background";
+      # do not edit resolv.conf
+      extraConfig = ''
+        nohook resolv.conf
+      '';
+    };
+  };
+
+  # service discovery on a local network via the mDNS/DNS-SD protocol suite
+  services.avahi = {
+    enable = true;
+    nssmdns4 = true;
+    openFirewall = true;
+  };
+
+  users.users.${username}.extraGroups = ["networkmanager"];
+
+  # faster boot
+  systemd = {
+    network = {
+      enable = true;
+      wait-online.enable = false;
+    };
+  };
+}