Enable auto-cpufreq for battery savings.

flake.nix

@@ -10,6 +10,11 @@
       inputs.nixpkgs.follows = "nixpkgs-stable-nixos";
     };
 
+    auto-cpufreq-stable-nixos = {
+      url = "github:AdnanHodzic/auto-cpufreq";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     disko-stable-nixos = {
       url = "github:nix-community/disko";
       inputs.nixpkgs.follows = "nixpkgs-stable-nixos";

nodes/hosts/nixwork/configuration.nix

@@ -9,6 +9,8 @@
     [ # Include the results of the hardware scan.
       ./hardware-configuration.nix
       inputs.nixos-hardware.nixosModules.framework-16-7040-amd
+      inputs.auto-cpufreq.nixosModules.default
+      ./programs/auto-cpufreq.nix
       ./programs/sof-firmware.nix
       # Not working yet.
       ./services/fprintd.nix

nodes/hosts/nixwork/programs/auto-cpufreq.nix

@@ -0,0 +1,18 @@
+{ pkgs, ... }: {
+  # List packages installed in system profile. To search, run:
+  # $ nix search wget
+  programs.auto-cpufreq = {
+    enable = true;
+    settings = {
+      charger = {
+        governor = "performance";
+        turbo = "auto";
+      };
+      battery = {
+        governor = "power-saver";
+        turbo = "never";
+      };
+    };
+  };
+}
+