transition to nixos stable

systems/x86_64-linux/drivebystation-nix/configuration.nix

@@ -15,6 +15,9 @@
   ];
 
 
+  # Use the default kernel maintained by the stable nixpkgs release.
+  boot.kernelPackages = pkgs.linuxPackages;
+
   # Bootloader.
   # boot.loader.systemd-boot.enable = true; # managed by lanzaboote
   boot.loader.efi.canTouchEfiVariables = true;
@@ -266,7 +269,7 @@
 
   services.mullvad-vpn = {
     enable = true;
-    gui.enable = true;
+    package = pkgs.mullvad-vpn;
   };
 
   fonts = {

systems/x86_64-linux/drivebystation-nix/default.nix

@@ -29,6 +29,11 @@ let
   # inherit (lib.my-namespace) systemPackages;
   inherit pkgs;
   installedPackages = lib.my-namespace.mkPackages pkgs;
+  # Explicit application exceptions; all other packages use stable pkgs.
+  unstablePkgs = import inputs.nixpkgs-unstable {
+    system = pkgs.stdenv.hostPlatform.system;
+    config.allowUnfree = true;
+  };
 in
 {
   # inherit system;
@@ -87,7 +92,7 @@ in
           spotify
           appimage-run  
           prismlauncher #replaces broken minecraft package
-          trilium-desktop
+          unstablePkgs.trilium-desktop
           terraform
           virt-manager
           nil
@@ -170,7 +175,7 @@ in
         my-namespace.cs-demo-manager
         vscode-modernized
         zed-editor
-        jetbrains-toolbox
+        unstablePkgs.jetbrains-toolbox
 
         (pkgs.writeShellScriptBin "switch-to-desktop" ''
           #!/bin/sh

systems/x86_64-linux/drivebystation-nix/hardware/hardware-configuration.nix

@@ -14,11 +14,7 @@
       ./acer-monitor-edid.nix
       ./samsung-monitor-edid.nix
     ];
-  # boot.kernelPackages = pkgs.linuxPackages_latest;
-  boot.kernelPackages = pkgs.cachyosKernels.linuxPackages-cachyos-latest;
   hardware.enableRedistributableFirmware = true;
-  # boot.kernelPackages = pkgs.linuxKernel.packages.linux_xanmod_latest;
-  # boot.kernelPackages = pkgs.linuxPackages;
   boot.loader.efi.canTouchEfiVariables = true;  
   boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usbhid" "usb_storage" "sd_mod" ];
   boot.kernelModules = [ "kvm-amd" "r8125" "4vl2loopback" ];