chore: update NixOS configuration to use unstable NVIDIA driver package and allow unfree packages

config/nixos/hardware/mennos-server.nix

@@ -5,11 +5,16 @@
   modulesPath,
   ...
 }:
+
+let
+  unstable = import <nixos-unstable> { config = config.nixpkgs.config; };
+in
 {
   imports = [
     /etc/nixos/hardware-configuration.nix
     ./mennos-server/zfs.nix
   ];
+
   networking.hostName = "mennos-server";
   networking.hostId = "64519940";
 
@@ -17,10 +22,13 @@
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;
 
+  # Allow unfree packages
+  nixpkgs.config.allowUnfree = true;
+
   # Load nvidia driver for Xorg and Wayland
   services.xserver.videoDrivers = [ "nvidia" ];
 
-  # Enable oepngl and 32-bit support
+  # Enable opengl and 32-bit support
   hardware.opengl = {
     enable = true;
     driSupport = true;
@@ -38,33 +46,13 @@
   };
 
   hardware.nvidia = {
-    # Modesetting is required.
     modesetting.enable = true;
-
-    # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
-    # Enable this if you have graphical corruption issues or application crashes after waking
-    # up from sleep. This fixes it by saving the entire VRAM memory to /tmp/ instead 
-    # of just the bare essentials.
     powerManagement.enable = false;
-
-    # Fine-grained power management. Turns off GPU when not in use.
-    # Experimental and only works on modern Nvidia GPUs (Turing or newer).
     powerManagement.finegrained = false;
-
-    # Use the NVidia open source kernel module (not to be confused with the
-    # independent third-party "nouveau" open source driver).
-    # Support is limited to the Turing and later architectures. Full list of 
-    # supported GPUs is at: 
-    # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus 
-    # Only available from driver 515.43.04+
-    # Currently alpha-quality/buggy, so false is currently the recommended setting.
     open = false;
-
-    # Enable the Nvidia settings menu,
-    # accessible via `nvidia-settings`.
     nvidiaSettings = true;
 
-    # Optionally, you may need to select the appropriate driver version for your specific GPU.
+    # Use the latest driver from the unstable channel
-    package = config.boot.kernelPackages.nvidiaPackages.beta;
+    package = unstable.linuxPackages.nvidiaPackages.beta;
   };
 }