Fix everything.

system/devices/networking/default.nix

@@ -0,0 +1,30 @@
+{ config, ... }:
+{
+  networking = {
+    wireless = {
+      enable = false;
+      iwd.enable = true;
+    };
+    dhcpcd.enable = true;
+    nftables.enable = true;
+    firewall.allowPing = false;
+    useNetworkd = true;
+    nameservers = [
+      "1.1.1.1#one.one.one.one"
+      "1.0.0.1#one.one.one.one"
+    ];
+  };
+
+  services.resolved = {
+    enable = true;
+    dnssec = "true";
+    domains = [ "~." ];
+    fallbackDns = config.networking.nameservers;
+    dnsovertls = "true";
+  };
+
+  environment = {
+    systemPackages = with pkgs; [ impala ];
+    persistence."/persist".directories = [ "/var/lib/iwd/" ];
+  };
+}