refactor config with better structure

nixos/default.nix

@@ -1,61 +1,34 @@
-{ pkgs, ... }:
+{ ... }:
 
 {
   imports = [
     ./hardware-configuration.nix
-    ./graphics
-    ./audio.nix
-    ./fonts/fonts.nix
-    ./dm/sddm.nix
-    ./wm/niri.nix
-    ./inputs/wooting.nix
-    ./network/bluetooth.nix
-    ./network/usb.nix
-    ./steam/steam.nix
+
+    # System
+    ./system/boot.nix
+    ./system/nix.nix
+    ./system/networking.nix
+    ./system/locale.nix
+    ./system/users.nix
+
+    # Hardware
+    ./hardware/graphics.nix
+    ./hardware/nvidia.nix
+    ./hardware/audio.nix
+    ./hardware/bluetooth.nix
+    ./hardware/storage.nix
+    ./hardware/wooting.nix
+
+    # Desktop
+    ./desktop/fonts.nix
+    ./desktop/sddm.nix
+    ./desktop/niri.nix
+
+    # Programs
+    ./programs/gaming.nix
     ./programs/obs.nix
   ];
 
-  boot.loader.systemd-boot.enable = true;
-  boot.loader.efi.canTouchEfiVariables = true;
-
-  networking.hostName = "prouk";
-  networking.networkmanager.enable = true;
-
-  time.timeZone = "Europe/Paris";
-
-  users.users.prouk = {
-    isNormalUser = true;
-    extraGroups = [ "wheel" ];
-  };
-
-  programs.firefox.enable = true;
-  programs.nix-ld.enable = true;
-
-  nixpkgs.config.allowUnfree = true;
-  nixpkgs.config.permittedInsecurePackages = [
-    "electron-40.10.5"
-  ];
-
-  nix.settings.experimental-features = [
-    "nix-command"
-    "flakes"
-  ];
-
   # NO TOUCHY
   system.stateVersion = "26.05";
-
-  boot.kernelPackages = pkgs.linuxPackages_latest;
-
-  nix.settings = {
-    trusted-users = [ "prouk" ];
-
-    substituters = [
-      "https://cache.nixos.org"
-      "https://nix-community.cachix.org"
-    ];
-    trusted-public-keys = [
-      "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
-      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
-    ];
-  };
 }

nixos/desktop/niri.nix

@@ -3,6 +3,6 @@
   programs.niri.enable = true;
 
   environment.systemPackages = [
-    inputs.xwayland-satellite.packages.${pkgs.system}.default
+    inputs.xwayland-satellite.packages.${pkgs.stdenv.hostPlatform.system}.default
   ];
 }

nixos/desktop/sddm.nix

@@ -1,6 +1,6 @@
 { pkgs, lib, config, ... }:
 let
-  # Same wallpaper niri displays (see home/config/default.nix).
+  # Same wallpaper niri displays (see home/dotfiles.nix).
   wallpaper = ../../assets/wallpaper.png;
 
   sddmTheme =

nixos/graphics/default.nix

@@ -1,10 +0,0 @@
-{ ... }:
-{
-  hardware.graphics = {
-    enable = true;
-  };
-
-  imports = [
-    ./nvidia.nix
-  ];
-}

nixos/hardware/graphics.nix

@@ -0,0 +1,4 @@
+{ ... }:
+{
+  hardware.graphics.enable = true;
+}

nixos/hardware/nvidia.nix

@@ -12,12 +12,13 @@
 
   environment.systemPackages = with pkgs; [
     egl-wayland
+    lact
     libva-utils
     nvidia-vaapi-driver
     nvtopPackages.nvidia
-    lact
   ];
 
+  # LACT GPU control daemon
   systemd.packages = with pkgs; [ lact ];
-  systemd.services.lactd.wantedBy = ["multi-user.target"];
+  systemd.services.lactd.wantedBy = [ "multi-user.target" ];
 }

nixos/programs/gaming.nix

@@ -4,7 +4,7 @@
     steam.enable = true;
     gamescope = {
       enable = true;
-      capSysNice  = false;
+      capSysNice = false;
     };
   };
 }

nixos/system/boot.nix

@@ -0,0 +1,26 @@
+{ pkgs, ... }:
+{
+  boot = {
+    kernelPackages = pkgs.linuxPackages_latest;
+
+    loader = {
+      systemd-boot.enable = true;
+      efi.canTouchEfiVariables = true;
+      # Skip the boot menu; hold Space while booting to show it.
+      timeout = 0;
+      # Keep /boot from filling up with old generations.
+      systemd-boot.configurationLimit = 5;
+    };
+
+    # Quiet boot
+    consoleLogLevel = 3;
+    initrd.verbose = false;
+    kernelParams = [
+      "quiet"
+      "udev.log_level=3"
+      "rd.udev.log_level=3"
+      "systemd.show_status=auto"
+      "rd.systemd.show_status=auto"
+    ];
+  };
+}

nixos/system/locale.nix

@@ -0,0 +1,4 @@
+{ ... }:
+{
+  time.timeZone = "Europe/Paris";
+}

nixos/system/networking.nix

@@ -0,0 +1,7 @@
+{ ... }:
+{
+  networking = {
+    hostName = "prouk";
+    networkmanager.enable = true;
+  };
+}

nixos/system/nix.nix

@@ -0,0 +1,32 @@
+{ ... }:
+{
+  nix.settings = {
+    experimental-features = [
+      "nix-command"
+      "flakes"
+    ];
+    trusted-users = [ "prouk" ];
+
+    substituters = [
+      "https://cache.nixos.org"
+      "https://nix-community.cachix.org"
+    ];
+    trusted-public-keys = [
+      "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    ];
+  };
+
+  nixpkgs.config.allowUnfree = true;
+
+  # Housekeeping
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+    options = "--delete-older-than 14d";
+  };
+  nix.optimise.automatic = true;
+
+  # Run unpatched dynamic binaries.
+  programs.nix-ld.enable = true;
+}

nixos/system/users.nix

@@ -0,0 +1,7 @@
+{ ... }:
+{
+  users.users.prouk = {
+    isNormalUser = true;
+    extraGroups = [ "wheel" ];
+  };
+}