system: add ucodenix to update microcode

use upstream bcachefs-tools flake
use rc kernel, enable scx conditionally

home manager revamps

flake.nix

@@ -71,6 +71,8 @@
       inputs.nixpkgs.follows = "nixpkgs";
       inputs.flake-parts.follows = "flake-parts";
     };
+
+    ucodenix.url = "github:e-tho/ucodenix";
     browser-previews = {
       url = "github:nix-community/browser-previews"; # Latest Chrome stable, beta, and dev
       inputs.nixpkgs.follows = "nixpkgs";

flake/hosts.nix

@@ -17,20 +17,40 @@
       android_sdk.accept_license = true;
     };
   };
+
+  specialArgs = {inherit self inputs pkgs-edge systemSettings userSettings;};
 in {
   flake = {
     nixosConfigurations.${systemSettings.hostname} = lib.nixosSystem {
-      specialArgs = {inherit self inputs systemSettings userSettings;};
+      inherit specialArgs;
       modules =
         [
-          {_module.args = {inherit pkgs-edge;};}
           ../default-host/configuration.nix # main nix configuration
           inputs.chaotic.nixosModules.default # chaotic nix bleeding edge packages
-          inputs.nur.nixosModules.nur
+          inputs.nur.nixosModules.nur # NUR - NixOS user repository
+          inputs.ucodenix.nixosModules.ucodenix # ucodeNix - CPU microcode updates
+          inputs.nix-flatpak.nixosModules.nix-flatpak # nix-flatpak, allows flatpak declaratively
+
+          # install home-manager as NixOS module
+          # so that it automatically gets deployed when running `nixos-rebuild switch`
+          inputs.home-manager.nixosModules.home-manager
+          {
+            home-manager = {
+              useGlobalPkgs = true;
+              useUserPackages = true;
+              # backupFileExtension = ".hm.bak";
+              extraSpecialArgs = specialArgs // {
+                # extra arguments for home-manager
+              };
+            };
 
-          # make home-manager as a module of nixos
-          # so that home-manager configuration will be deployed automatically when executing `nixos-rebuild switch`
-          inputs.home-manager.nixosModules.default
+            home-manager.users.${userSettings.username} = {
+              imports = [
+                ../home-manager
+                inputs.nix-flatpak.homeManagerModules.nix-flatpak
+              ];
+            };
+          }
         ]
         ++ lib.optionals systemSettings.secureboot [inputs.lanzaboote.nixosModules.lanzaboote];
     };

home-manager/default.nix

@@ -4,14 +4,11 @@
   lib,
   pkgs,
   pkgs-edge,
+  inputs,
   systemSettings,
   userSettings,
   ...
 }: {
-  # Home Manager needs a bit of information about you and the paths it should
-  # manage.
-  home.username = userSettings.username;
-  home.homeDirectory = "/home/" + userSettings.username;
 
   imports =
     [

modules-overlays/default.nix

@@ -12,7 +12,7 @@
 
   nixpkgs.overlays = [
     (final: prev: {
-      # bcachefs-tools = inputs.bcachefs-tools.packages.${pkgs.system}.bcachefs-tools;
+      bcachefs-tools = inputs.bcachefs-tools.packages.${pkgs.system}.bcachefs-tools;
     })
   ];
 

modules-overlays/uwsm/module.nix

@@ -6,12 +6,12 @@
 }: let
   cfg = config.programs.uwsm;
   mk_uwsm_desktop_entry = opts: (pkgs.writeTextFile {
-    name = lib.traceVal "${opts.name}";
-    text = lib.traceVal ''
+    name = "${opts.name}";
+    text = ''
       [Desktop Entry]
       Name=${opts.compositor_pretty_name} (with UWSM)
       Comment=${opts.compositor_comment}
-      Exec=${lib.getExe cfg.package} start -S -- "${opts.compositor_bin_path}"
+      Exec=${lib.getExe cfg.package} start -S -F "${opts.compositor_bin_path}"
       Type=Application
     '';
     destination = "/share/wayland-sessions/${opts.name}_uwsm.desktop";

pkgs/global-packages.nix

@@ -10,9 +10,6 @@
   inputs,
   ...
 }: {
-  imports = [
-    inputs.nix-flatpak.nixosModules.nix-flatpak
-  ];
   environment.systemPackages =
     (with pkgs; [
       # System Packages

pkgs/user-packages.nix

@@ -9,9 +9,6 @@
   inputs,
   ...
 }: {
-  imports = [
-    inputs.nix-flatpak.homeManagerModules.nix-flatpak
-  ];
   home.packages =
     (with pkgs; [
       # here is some command line tools I use frequently

system/boot/kernel.nix

@@ -4,7 +4,7 @@
   pkgs,
   ...
 }: {
-  boot.kernelPackages = pkgs.linuxPackages_cachyos-lto;
+  boot.kernelPackages = pkgs.linuxPackages_testing;
 
   boot.extraModulePackages = with config.boot.kernelPackages; [
     # zenpower is used for reading temperature, voltage, current and power

system/services/default.nix

@@ -1,5 +1,6 @@
 # Configure system services
 {
+  config,
   lib,
   pkgs,
   systemSettings,
@@ -24,7 +25,7 @@
   };
 
   # Enable scx extra schedulers, only available for linux-cachyos
-  chaotic.scx.enable = true; # by default uses rustland
+  chaotic.scx.enable = (config.boot.kernelPackages.kernel.passthru.config.CONFIG_SCHED_CLASS_EXT or null) == "y"; # by default uses rustland
   chaotic.scx.scheduler = "scx_bpfland";
 
   # Accounts daemon is needed to remember passwords and other account information
@@ -92,4 +93,7 @@
   security.polkit.enable = true; # Enable polkit for elevated prompts
 
   # services.colord.enable = true; # For color management
+
+  services.ucodenix.enable = true;
+  services.ucodenix.cpuSerialNumber = "00A6-0F12-0000-0000-0000-0000";
 }

system/users.nix

@@ -27,14 +27,4 @@
       else pkgs.bash;
   };
 
-  home-manager = {
-    useGlobalPkgs = true;
-    useUserPackages = true;
-    # backupFileExtension = ".hm.bak";
-
-    users.${userSettings.username} = import ../home-manager;
-    extraSpecialArgs = {
-      inherit self inputs pkgs-edge systemSettings userSettings;
-    };
-  };
 }