From 38494003cc53d5370dc2252790cfc6680117d9ae Mon Sep 17 00:00:00 2001
From: Crony Akatsuki <crony@cronyakatsuki.xyz>
Date: Thu, 30 Jan 2025 12:23:59 +0100
Subject: [PATCH] Add auto-cpufreq for power management.

---
 flake.lock                    | 21 +++++++++++++++++++++
 flake.nix                     |  9 +++++++++
 hosts/nixos/configuration.nix | 17 +++++++++++++++++
 3 files changed, 47 insertions(+)

diff --git a/flake.lock b/flake.lock
index 1252ebf..ed8620e 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,5 +1,25 @@
 {
   "nodes": {
+    "auto-cpufreq": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1737497253,
+        "narHash": "sha256-sOLwi/3oQiNWA2I3WiGneK988YdKVHbH1P5lEjxypIg=",
+        "owner": "AdnanHodzic",
+        "repo": "auto-cpufreq",
+        "rev": "4cee388c1bbea3adc333b597717d5d8d12375705",
+        "type": "github"
+      },
+      "original": {
+        "owner": "AdnanHodzic",
+        "repo": "auto-cpufreq",
+        "type": "github"
+      }
+    },
     "base16": {
       "inputs": {
         "fromYaml": "fromYaml"
@@ -3231,6 +3251,7 @@
     },
     "root": {
       "inputs": {
+        "auto-cpufreq": "auto-cpufreq",
         "home-manager": "home-manager",
         "nixpkgs": "nixpkgs",
         "nvf": "nvf",
diff --git a/flake.nix b/flake.nix
index 41e6437..b38d6cd 100644
--- a/flake.nix
+++ b/flake.nix
@@ -19,12 +19,19 @@
       url = "github:notashelf/nvf";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+
+    # auto-cpufreq latest version, for optimizing my laptop's thermal's
+    auto-cpufreq = {
+      url = "github:AdnanHodzic/auto-cpufreq";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs = {
     self,
     nixpkgs,
     home-manager,
+    auto-cpufreq,
     ...
   } @ inputs: {
     nixosConfigurations.nixos = nixpkgs.lib.nixosSystem {
@@ -34,6 +41,8 @@
         ./hosts/nixos/configuration.nix
         # Enable stylix
         inputs.stylix.nixosModules.stylix
+        # Load updated auto-cpufreq
+        auto-cpufreq.nixosModules.default
         # Load my modules
         ./modules/nixos
         # Setup home manager for my user
diff --git a/hosts/nixos/configuration.nix b/hosts/nixos/configuration.nix
index ec90abf..b88f8d4 100644
--- a/hosts/nixos/configuration.nix
+++ b/hosts/nixos/configuration.nix
@@ -95,6 +95,23 @@
     options = ["_netdev" "noauto" "x-systemd.automount" "x-systemd.mount-timeout=10" "timeo=14" "x-systemd.idle-timeout=600"];
   };
 
+  # Setup auto-cpufreq
+  programs.auto-cpufreq = {
+    enable = true;
+
+    settings = {
+      battery = {
+        governor = "powersave";
+        turbo = "never";
+      };
+
+      charger = {
+        governor = "performance";
+        turbo = "auto";
+      };
+    };
+  };
+
   # Allow for wireguard traffic
   networking.firewall = {
     # if packets are still dropped, they will show up in dmesg