adding modularity

README.md

@@ -1,2 +1,19 @@
 # NixOS configuration - managing my devices
 
+
+## Using this flake
+Clone this repository and use the current directory as the flake target `<target>`.
+
+or
+
+Use this repository as a a remote input using the following format for `<target>`:
+```
+git+https://git.kluster.moll.re/remoll/nixos-config
+```
+Don't forget to add the `#<host>` to the end of the target to specify the host configuration to use.
+
+
+## Hosts
+
+### Spectre
+Run `nixos-rebuild switch --flake <target>#spectre` to apply the configuration.

flake.lock

@@ -0,0 +1,66 @@
+{
+  "nodes": {
+    "home-manager": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1720042825,
+        "narHash": "sha256-A0vrUB6x82/jvf17qPCpxaM+ulJnD8YZwH9Ci0BsAzE=",
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "rev": "e1391fb22e18a36f57e6999c7a9f966dc80ac073",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "ref": "release-24.05",
+        "repo": "home-manager",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1724531977,
+        "narHash": "sha256-XROVLf9ti4rrNCFLr+DmXRZtPjCQTW4cYy59owTEmxk=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "2527da1ef492c495d5391f3bcf9c1dd9f4514e32",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-unstable": {
+      "locked": {
+        "lastModified": 1724479785,
+        "narHash": "sha256-pP3Azj5d6M5nmG68Fu4JqZmdGt4S4vqI5f8te+E/FTw=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "d0e1602ddde669d5beb01aec49d71a51937ed7be",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "home-manager": "home-manager",
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-unstable": "nixpkgs-unstable"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -4,16 +4,41 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-24.05";
     nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
-    # probably home manager at some point
+    # Home manager
+    home-manager.url = "github:nix-community/home-manager/release-24.05";
+    home-manager.inputs.nixpkgs.follows = "nixpkgs";
   };
 
-  outputs = { self, nixpkgs, ... }@inputs: {
+  outputs = {
+    self,
+    nixpkgs,
+    home-manager,
+    ... 
+  } @ inputs: {
 
-    nixosConfigurations.spectre-x360-2018 = nixpkgs.lib.nixosSystem {
+    nixosConfigurations = {
+      # HP Spectre x360 2018
+      spectre = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
         modules = [
-        ./machines/spectre-x360-2018/configuration.nix
+          ./hosts/spectre-x360-2018/configuration.nix
+          ./modules/nixos/gdm.nix
+          home-manager.nixosModules.home-manager
+            {
+              home-manager.useGlobalPkgs = true;
+              home-manager.useUserPackages = true;
+
+              # home-manager.extraSpecialArgs = inputs // specialArgs;
+              home-manager.users.remy = import ./users/remy.nix;
+            }
         ];
       };
     };
+  };
+    # raspberry-pi = nixpkgs.lib.nixosSystem {
+    #   system = "aarch64-linux";
+    #   modules = [
+    #     ./hosts/raspberry-pi/configuration.nix
+    #   ];
+    # };
 }

hosts/spectre-x360-2018/configuration.nix

@@ -10,19 +10,25 @@
       ./hardware-configuration.nix
     ];
 
+  # Use the "experimental" flakes for cleaner config
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+
   # Use the systemd-boot EFI boot loader.
+  # In this setup it is chain-loaded by REFInd (managed by Arch linux)
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = false;
+
+  # require the bcachefs modules to be loaded
   boot.supportedFilesystems = [ "bcachefs" ];
   boot.kernelPackages = pkgs.linuxPackages_latest;
 
-  networking.hostName = "nixos"; # Define your hostname.
+  networking.hostName = "ArchNix"; # Define your hostname.
   # Pick only one of the below networking options.
   # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
   # networking.networkmanager.enable = true;  # Easiest to use and most distros use this by default.
 
   # Set your time zone.
-  time.timeZone = "Europe/Amsterdam";
+  time.timeZone = "Europe/Berlin";
 
   # Configure network proxy if necessary
   # networking.proxy.default = "http://user:password@proxy:port/";

modules/nixos/gdm.nix

@@ -0,0 +1,26 @@
+
+{
+    config,
+    lib,
+    pkgs,
+    ...
+}:
+{
+    # this actually does not enable xorg, but it is required for GDM
+    services.xserver.enable = true;
+    services.xserver.displayManager.gdm.enable = true;
+    services.xserver.desktopManager.gnome.enable = true;
+    # here we set wayland to be used
+    services.xserver.displayManager.gdm.wayland = true;
+
+    options = {
+        services.gdm = {
+            enable = lib.mkEnableOption "Enable GDM";
+            # Add any additional GDM options here
+        };
+    };
+
+    config = {
+        services.gdm = if config.services.gdm.enable then gdmConfig else {};
+    };
+}

modules/nixos/networks.nix

@@ -0,0 +1,26 @@
+{ config, pkgs, ... }:
+
+let
+    networks = [
+        {
+            ssid = "MyNetwork1";
+            psk = "password1";
+        }
+        {
+            ssid = "MyNetwork2";
+            psk = "password2";
+        }
+        {
+            ssid = "MyNetwork3";
+            psk = "password3";
+        }
+        {
+            ssid = "MyNetwork4";
+            psk = "password4";
+        }
+    ];
+in
+
+{
+    networking.networkmanager.networks = networks;
+}

users/remy.nix

@@ -0,0 +1,12 @@
+{pkgs, ...}: {
+
+  imports = [
+    ../modules/home-manager/browser.nix
+    ../modules/home-manager/code.nix
+  ];
+
+  programs.git = {
+    userName = "Remy Moll";
+    userEmail = "me@moll.re";
+  };
+}

utils/binary-cache.nix

@@ -0,0 +1,22 @@
+{
+  lib,
+  ...
+}: {
+
+  # ...
+  nix.settings = {
+    # allow substituters to be used
+
+    substituters = [
+        # also add mirrors?
+        #   "https://mirrors.ustc.edu.cn/nix-channels/store"
+        "https://cache.nixos.org"
+    ];
+
+    trusted-public-keys = [
+      # the default public key of cache.nixos.org, it's built-in, no need to add it here
+      "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
+    ];
+  };
+
+}

utils/garbage-collection.nix

@@ -0,0 +1,23 @@
+{ lib, pkgs, ... }:
+
+{
+  # ...
+
+  # Limit the number of generations to keep
+  boot.loader.systemd-boot.configurationLimit = 10;
+  # boot.loader.grub.configurationLimit = 10;
+
+  # Perform garbage collection weekly to maintain low disk usage
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+    options = "--delete-older-than 1w";
+  };
+
+  # Optimize storage
+  # You can also manually optimize the store via:
+  #    nix-store --optimise
+  # Refer to the following link for more details:
+  # https://nixos.org/manual/nix/stable/command-ref/conf-file.html#conf-auto-optimise-store
+  nix.settings.auto-optimise-store = true;
+}