From b1b6a6c395ed67a65b64ac1f92be6a9edc956dd5 Mon Sep 17 00:00:00 2001
From: joshashtondev <me@joshashton.dev>
Date: Tue, 22 Sep 2026 15:39:56 -0600
Subject: [PATCH] =?UTF-8?q?nixos:=20gen=2067=20@=20lilac=20=E2=80=94=20202?=
 =?UTF-8?q?6-09-22=2015:39=2026.05.20260918.cf9d2fb=20(Yarara)=20-----=20I?=
 =?UTF-8?q?P=20over=20bluetooth=20for=20seamless=20LAN-Mouse?=
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---
 hosts/lilac/default.nix    | 36 ++++++++++++++++++++++++++++++++----
 hosts/violet/default.nix   | 34 ++++++++++++++++++++++++++++++++--
 system/network/default.nix |  5 +++++
 3 files changed, 69 insertions(+), 6 deletions(-)

diff --git a/hosts/lilac/default.nix b/hosts/lilac/default.nix
index 6e78387..b32714a 100644
--- a/hosts/lilac/default.nix
+++ b/hosts/lilac/default.nix
@@ -32,14 +32,42 @@ in
     (llama-cpp.override { vulkanSupport = true; })
   ];
 
-  boot.kernelModules = [ "thunderbolt-net" ];
-
-  networking.interfaces.thunderbolt0.ipv4.addresses = [{
+  networking.interfaces.bnep0.ipv4.addresses = [{
     address = "10.0.0.1";
     prefixLength = 24;
   }];
 
-  networking.firewall.interfaces."thunderbolt0".allowedUDPPorts = [ 4242 ];
+  networking.firewall.interfaces."bnep0".allowedUDPPorts = [ 4242 ];
+
+  systemd = {
+    services = {
+      # 1. Start the listening server profile
+      bt-pan-server = {
+        description = "Bluetooth PAN GN Server";
+        after = [ "bluetooth.service" ];
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig = {
+          ExecStart = "${pkgs.bluez-tools}/bin/bt-network -s gn pan0";
+          Restart = "always";
+          RestartSec = 5;
+        };
+      };
+
+      # 2. Trust and persistently attempt connection to Device B
+      bt-pan-client = {
+        description = "Bluetooth PAN Client Connection to Device B";
+        after = [ "bluetooth.service" "bt-pan-server.service" ];
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig = {
+          # Replace XX:XX:XX:XX:XX:XX with Device B's actual Bluetooth MAC Address
+          ExecStartPre = "${pkgs.bluez}/bin/bluetoothctl trust 70:A6:CC:47:E7:75";
+          ExecStart = "${pkgs.bluez-tools}/bin/bt-network -c 70:A6:CC:47:E7:75 gn";
+          Restart = "always";
+          RestartSec = 10; # Retry every 10 seconds if Device B goes out of range
+        };
+      };
+    };
+  };
 
   hardware.graphics = {
     enable = true;
diff --git a/hosts/violet/default.nix b/hosts/violet/default.nix
index b9e442f..4470586 100644
--- a/hosts/violet/default.nix
+++ b/hosts/violet/default.nix
@@ -25,12 +25,42 @@
 
   boot.kernelModules = [ "thunderbolt-net" ];
 
-  networking.interfaces.thunderbolt0.ipv4.addresses = [{
+  networking.interfaces.bnep0.ipv4.addresses = [{
     address = "10.0.0.2";
     prefixLength = 24;
   }];
 
-  networking.firewall.interfaces."thunderbolt0".allowedUDPPorts = [ 4242 ];
+  networking.firewall.interfaces."bnep0".allowedUDPPorts = [ 4242 ];
+
+  systemd = {
+    services = {
+      # 1. Start the listening server profile
+      bt-pan-server = {
+        description = "Bluetooth PAN GN Server";
+        after = [ "bluetooth.service" ];
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig = {
+          ExecStart = "${pkgs.bluez-tools}/bin/bt-network -s gn pan0";
+          Restart = "always";
+          RestartSec = 5;
+        };
+      };
+
+      # 2. Trust and persistently attempt connection to Device A
+      bt-pan-client = {
+        description = "Bluetooth PAN Client Connection to Device A";
+        after = [ "bluetooth.service" "bt-pan-server.service" ];
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig = {
+          # Replace XX:XX:XX:XX:XX:XX with Device B's actual Bluetooth MAC Address
+          ExecStartPre = "${pkgs.bluez}/bin/bluetoothctl trust 84:D1:C1:A9:EE:52";
+          ExecStart = "${pkgs.bluez-tools}/bin/bt-network -c 84:D1:C1:A9:EE:52 gn";
+          Restart = "always";
+          RestartSec = 10; # Retry every 10 seconds if Device B goes out of range
+        };
+      };
+    };
+  };
 
   services.tlp = {
     enable = false;
diff --git a/system/network/default.nix b/system/network/default.nix
index 343c883..660aa46 100644
--- a/system/network/default.nix
+++ b/system/network/default.nix
@@ -17,6 +17,11 @@
     };
   };
 
+  hardware.bluetooth = {
+    powerOnBoot = true;
+    settings.General.Enable = "Source,Sink,Media,Socket,Network";
+  };
+
   boot.extraModprobeConfig = ''
     options iwlwifi power_save=0
   '';