split nixos config

hosts/desktop/configuration.nix

@@ -1,130 +1,39 @@
-# Edit this configuration file to define what should be installed on
-# your system.  Help is available in the configuration.nix(5) man page
-# and in the NixOS manual (accessible by running ‘nixos-help’).
-
 { config, pkgs, inputs, ... }:
 
 {
   imports =
-    [ # Include the results of the hardware scan.
+    [
       ./hardware-configuration.nix
       inputs.home-manager.nixosModules.default
+      ../../modules/nixos/bootloader.nix
+      ../../modules/nixos/user.nix
+      ../../modules/nixos/nvidia.nix
+      ../../modules/nixos/i3.nix
+      ../../modules/nixos/nm.nix
+      ../../modules/nixos/sound.nix
+      ../../modules/nixos/steam.nix
+      ../../modules/nixos/env.nix
     ];
 
-# Kernel
   boot.kernelPackages = pkgs.linuxPackages_latest;
 
-# Bootloader.
-  boot.loader.systemd-boot.enable = true;
-  boot.loader.efi.canTouchEfiVariables = true;
+  networking.hostName = "desktop";
 
-  networking.hostName = "desktop"; # Define your hostname.
-# networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
-
-# Enable networking
-  networking.networkmanager.enable = true;
-
-# Set your time zone.
   time.timeZone = "America/Toronto";
 
-# Select internationalisation properties.
   i18n.defaultLocale = "en_CA.UTF-8";
 
-  hardware.opengl = {
-    enable = true;
-    driSupport = true;
-    driSupport32Bit = true;
-  };
-
-  hardware.nvidia.modesetting.enable = true;
-
-# i3 relates stuff
-  environment.pathsToLink = [ "/libexec" ];
-  services.xserver = {
-    enable = true; 
-
-    desktopManager = {
-      xterm.enable = false;
-    };
-
-    videoDrivers = [ "nvidia "];
-
-    displayManager = {
-      defaultSession = "none+i3";
-      lightdm.enable = true;
-    };
-
-    windowManager.i3 = {
-      enable = true;
-      package = pkgs.i3-gaps;
-      extraPackages = with pkgs; [
-        dmenu
-        i3status
-        i3lock
-        i3blocks
-        feh
-        arandr
-      ];
-    };
-
-    layout = "us";
-    xkbVariant = "";
-  };
-
-# pipewire
-  security.rtkit.enable = true;
-  services.pipewire = {
-    enable = true;
-    alsa.enable = true;
-    alsa.support32Bit = true;
-    pulse.enable = true;
-  };
-
-# Define a user account. Don't forget to set a password with ‘passwd’.
-  users.users.mthomson = {
-    shell = pkgs.zsh;
-    isNormalUser = true;
-    description = "Michael Thomson";
-    extraGroups = [ "networkmanager" "wheel" ];
-    packages = with pkgs; [];
-  };
-
-# Allow unfree packages
   nixpkgs.config.allowUnfree = true;
 
-  nix.settings = {
-    trusted-users = ["mthomson"];
-
-    substituters = [
-      "https://cache.nixos.org"
-      "https://nix-community.cachix.org"
-    ];
-
-    trusted-public-keys = [
-      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
-    ];
-  };
-
-
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
+
   environment.systemPackages = with pkgs; [
-    neovim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
+    neovim
     wget
     git
     curl
   ];
 
-  environment.variables.EDITOR = "nvim";
-
-  programs = {
-    zsh.enable = true;
-    steam = {
-      enable = true;
-      gamescopeSession.enable = true;
-    };
-    gamemode.enable = true;
-  };
-
   home-manager = {
     extraSpecialArgs = { inherit inputs; };
     useGlobalPkgs = true;
@@ -134,18 +43,6 @@
     };
   };
 
-  programs.nix-ld.enable = true;
-  programs.nix-ld.libraries = with pkgs; [
-# Add any missing dynamic libraries for unpackaged programs
-# here, NOT in environment.systemPackages
-  ];
-
-# This value determines the NixOS release from which the default
-# settings for stateful data, like file locations and database versions
-# on your system were taken. It‘s perfectly fine and recommended to leave
-# this value at the release version of the first install of this system.
-# Before changing this value read the documentation for this option
-# (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "23.11"; # Did you read the comment?
+  system.stateVersion = "23.11";
 
 }

modules/nixos/bootloader.nix

@@ -0,0 +1,4 @@
+{
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+}

modules/nixos/env.nix

@@ -0,0 +1,5 @@
+{
+  environment.variables = {
+    EDITOR = "nvim";
+  };
+}

modules/nixos/i3.nix

@@ -0,0 +1,33 @@
+{ pkgs, ... }:
+
+{
+  environment.pathsToLink = [ "/libexec" ];
+  services.xserver = {
+    enable = true; 
+
+    desktopManager = {
+      xterm.enable = false;
+    };
+
+    displayManager = {
+      defaultSession = "none+i3";
+      lightdm.enable = true;
+    };
+
+    windowManager.i3 = {
+      enable = true;
+      package = pkgs.i3-gaps;
+      extraPackages = with pkgs; [
+        dmenu
+          i3status
+          i3lock
+          i3blocks
+          feh
+          arandr
+      ];
+    };
+
+    layout = "us";
+    xkbVariant = "";
+  };
+}

modules/nixos/nix-ld.nix

@@ -0,0 +1,6 @@
+{ pkgs, ... }:
+
+{
+  programs.nix-ld.enable = true;
+  programs.nix-ld.libraries = with pkgs; [];
+}

modules/nixos/nm.nix

@@ -0,0 +1,3 @@
+{
+  networking.networkmanager.enable = true;
+}

modules/nixos/nvidia.nix

@@ -0,0 +1,11 @@
+{
+  hardware.opengl = {
+    enable = true;
+    driSupport = true;
+    driSupport32Bit = true;
+  };
+
+  hardware.nvidia.modesetting.enable = true;
+
+  services.xserver.videoDrivers = [ "nvidia "];
+}

modules/nixos/sound.nix

@@ -0,0 +1,9 @@
+{
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+  };
+}

modules/nixos/steam.nix

@@ -0,0 +1,9 @@
+{
+  programs = {
+    steam = {
+      enable = true;
+      gamescopeSession.enable = true;
+    };
+    gamemode.enable = true;
+  };
+}

modules/nixos/user.nix

@@ -0,0 +1,27 @@
+{ pkgs, ... }:
+
+{
+  programs.zsh.enable = true;
+
+  nix.settings = {
+    trusted-users = ["mthomson"];
+
+    substituters = [
+      "https://cache.nixos.org"
+      "https://nix-community.cachix.org"
+    ];
+
+    trusted-public-keys = [
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    ];
+  };
+
+
+  users.users.mthomson = {
+    shell = pkgs.zsh;
+    isNormalUser = true;
+    description = "Michael Thomson";
+    extraGroups = [ "networkmanager" "wheel" ];
+    packages = with pkgs; [];
+  };
+}