fix: Add an upgrade

tuxedo/pulse/14/gen3/README.md

@@ -12,15 +12,4 @@ Gen3](https://www.tuxedocomputers.com/en/TUXEDO-Pulse-14-Gen3).
 
 With the Linux Kernel version `6.6.33` (NixOS 24.05) there are shutdown issues resulting in the battery not turning off
 completely. Apparently a newer Kernel (tested with `6.8.12`) fixes this (the exact version where this problem is fixed is unknown).
-
+This `default.nix` will upgrade to the `pkgs.linuxPackages_latest` if the kernel is older than `6.8.12`.
-You can use
-
-```nix
-  boot.kernelPackages =
-    if (config.boot.zfs.enabled)
-    then pkgs.zfs.latestCompatibleLinuxPackages
-    else pkgs.linuxPackages_latest;
-```
-
-to use the latest Kernel, where `pkgs` should probably
-be the `nixos-unstable` channel (`github:nixos/nixpkgs/nixos-unstable`).

tuxedo/pulse/14/gen3/default.nix

@@ -1,4 +1,9 @@
-{pkgs, ...}: {
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}: {
   imports = [
     ../../../../common/cpu/amd
     ../../../../common/cpu/amd/pstate.nix
@@ -6,4 +11,14 @@
     ../../../../common/pc/laptop
     ../../../../common/pc/laptop/ssd
   ];
+
+  # Fixing a power-issue with older kernels.
+  # When powered off, the battery does not turn off completely.
+  # Kernel 6.8.12 fixes this,
+  # the exact version is still unknown which fixed this.
+  boot.kernelPackages = lib.mkIf (lib.versionOlder pkgs.linux.version "6.8.12") (
+    if (config.boot.zfs.enabled)
+    then pkgs.zfs.latestCompatibleLinuxPackages
+    else pkgs.linuxPackages_latest
+  );
 }