nixos: improve wifi iwd random and thresholds

nixos/desktop.nix

@@ -1,6 +1,23 @@
 { pkgs, ... }:
 {
-	networking.wireless.iwd.enable = true;
+	networking.wireless.iwd = {
+		enable = true;
+		settings = {
+			General = {
+				AddressRandomization = "network";
+				# EnableNetworkConfiguration = false;
+
+				RoamThreshold = -70;
+				RoamThreshold5G = -90;
+				RoamRetryInterval = 10;
+			};
+			# Network.EnableIPv6 = true;
+
+			Rank.BandModifier5Ghz = 5.0;
+			# Scan.DisablePeriodicScan = true;
+		};
+	};
+
 	systemd.network.networks.wifi = {
 		matchConfig.Name = "wlan0";
 		DHCP = "ipv4";