From a00798b058d49e9c0a807f8d824984f16d1a1a81 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Moritz=20B=C3=B6hme?= <mail@moritzboeh.me>
Date: Mon, 18 Apr 2022 12:20:04 +0200
Subject: [PATCH] :rocket: enable asus touchpad numpad

---
 flake.lock                     | 17 +++++++++++++++++
 flake.nix                      |  6 ++++++
 hosts/nixos-laptop/default.nix | 28 +++++++++++++++++++++++++++-
 3 files changed, 50 insertions(+), 1 deletion(-)

diff --git a/flake.lock b/flake.lock
index bc1349c..ee4b1f4 100644
--- a/flake.lock
+++ b/flake.lock
@@ -18,6 +18,22 @@
         "type": "github"
       }
     },
+    "asus-touchpad-numpad-driver": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1646981564,
+        "narHash": "sha256-qanPTmP2Sctq4ybiUFzIiADP2gZH8HhajBORUSIXb04=",
+        "owner": "mohamed-badaoui",
+        "repo": "asus-touchpad-numpad-driver",
+        "rev": "a2bada610ebb3fc002fceb53ddf93bc799241867",
+        "type": "github"
+      },
+      "original": {
+        "owner": "mohamed-badaoui",
+        "repo": "asus-touchpad-numpad-driver",
+        "type": "github"
+      }
+    },
     "dracula-fish": {
       "flake": false,
       "locked": {
@@ -303,6 +319,7 @@
     "root": {
       "inputs": {
         "agenix": "agenix",
+        "asus-touchpad-numpad-driver": "asus-touchpad-numpad-driver",
         "dracula-fish": "dracula-fish",
         "emacs-overlay": "emacs-overlay",
         "forgit-git": "forgit-git",
diff --git a/flake.nix b/flake.nix
index 9273df7..05ff6c2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -33,6 +33,12 @@
 
     # VSCode plugin
     nix-flake-tools.url = "github:rastertail/nix-flake-tools";
+
+    # Laptop Touchpad
+    asus-touchpad-numpad-driver = {
+      url = "github:mohamed-badaoui/asus-touchpad-numpad-driver";
+      flake = false;
+    };
   };
 
   outputs = inputs@{ self, agenix, home-manager, nixpkgs, utils, ... }:
diff --git a/hosts/nixos-laptop/default.nix b/hosts/nixos-laptop/default.nix
index 776b77e..478410c 100644
--- a/hosts/nixos-laptop/default.nix
+++ b/hosts/nixos-laptop/default.nix
@@ -2,7 +2,7 @@
 # your system.  Help is available in the configuration.nix(5) man page
 # and in the NixOS manual (accessible by running ‘nixos-help’).
 
-{ config, pkgs, ... }:
+{ config, pkgs, inputs, ... }:
 
 {
   imports = [
@@ -78,6 +78,32 @@
     script = "${batteryLevelSufficient}/bin/battery-level-sufficient";
   };
 
+  # Trackpad
+  # i2c for https://github.com/mohamed-badaoui/asus-touchpad-numpad-driver
+  hardware.i2c.enable = true;
+  systemd.services.asus-touchpad-numpad = {
+    description =
+      "Activate Numpad inside the touchpad with top right corner switch";
+    documentation =
+      [ "https://github.com/mohamed-badaoui/asus-touchpad-numpad-driver" ];
+    path = [ pkgs.i2c-tools ];
+    script = ''
+      cd ${inputs.asus-touchpad-numpad-driver}
+      # In the last argument here you choose your layout.
+      ${
+        pkgs.python3.withPackages (ps: [ ps.libevdev ])
+      }/bin/python asus_touchpad.py m433ia
+    '';
+    # Probably needed because it fails on boot seemingly because the driver
+    # is not ready yet. Alternativly, you can use `sleep 3` or similar in the
+    # `script`.
+    serviceConfig = {
+      RestartSec = "1s";
+      Restart = "on-failure";
+    };
+    wantedBy = [ "multi-user.target" ];
+  };
+
   # This value determines the NixOS release from which the default
   # settings for stateful data, like file locations and database versions
   # on your system were taken. It‘s perfectly fine and recommended to leave