fix(noctalia): avoid mihomo network speed double count (#414)

home/hosts/linux/12kingdoms-shoukei/noctalia.toml

@@ -6,3 +6,10 @@
 [brightness.monitor.eDP-1]
 backend = "backlight"
 backlight_device = "apple-panel-bl"
+
+# The default total counts packets on both Mihomo's TUN and the Wi-Fi uplink.
+[widget.net_rx]
+interface = "wld0"
+
+[widget.net_tx]
+interface = "wld0"

home/hosts/linux/idols-ai.nix

@@ -34,6 +34,9 @@ in
   xdg.configFile."niri/niri-hardware.kdl".source =
     mkSymlink "${config.home.homeDirectory}/nix-config/hosts/idols-ai/niri-hardware.kdl";
 
+  # Keep Noctalia's network widgets on the physical uplink, not the Mihomo TUN.
+  xdg.configFile."noctalia/host-ai.toml".source = ./idols-ai/noctalia.toml;
+
   # The desktop speakers are already loud, so use the broadcast-standard -23 dB.
   services.easyeffects.extraPresets."loudness-normalization".output."autogain#0".target = -23.0;
 }

home/hosts/linux/idols-ai/noctalia.toml

@@ -0,0 +1,6 @@
+# The default total counts packets on both Mihomo's TUN and the physical uplink.
+[widget.net_rx]
+interface = "enp130s0"
+
+[widget.net_tx]
+interface = "enp130s0"