Allow building installers with custom configs

    - Move previous config snippets into snippet files, used as default snippets (getCustomOrDefaultSnippet)
    - If a custom snippet is found in customConfigSnippets, it is used instead

.editorconfig

@@ -27,3 +27,7 @@ insert_final_newline = true
 indent_style = tab
 insert_final_newline = true
 
+[*.snippet]
+indent_style = space
+indent_size = 2
+insert_final_newline = true

modules/nixos/defaultConfigs/snippets/audio.snippet

@@ -0,0 +1,16 @@
+ # Enable sound with pipewire.
+  sound.enable = false;
+  hardware.pulseaudio.enable = false;
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+    # If you want to use JACK applications, uncomment this
+    #jack.enable = true;
+
+    # use the example session manager (no others are packaged yet so this is enabled by default,
+    # no need to redefine it in your config for now)
+    #media-session.enable = true;
+  };

modules/nixos/defaultConfigs/snippets/autologin.snippet

@@ -0,0 +1,3 @@
+  # Enable automatic login for the user.
+  services.xserver.displayManager.autoLogin.enable = true;
+  services.xserver.displayManager.autoLogin.user = "@@username@@";

modules/nixos/defaultConfigs/snippets/autologingdm.snippet

@@ -0,0 +1,3 @@
+  # Workaround for GNOME autologin: https://github.com/NixOS/nixpkgs/issues/103746#issuecomment-945091229
+  systemd.services."getty@tty1".enable = false;
+  systemd.services."autovt@tty1".enable = false;

modules/nixos/defaultConfigs/snippets/autologintty.snippet

@@ -0,0 +1,2 @@
+  # Enable automatic login for the user.
+  services.getty.autologinUser = "@@username@@";

modules/nixos/defaultConfigs/snippets/bootbios.snippet

@@ -0,0 +1,5 @@
+  # Bootloader.
+  boot.loader.grub.enable = true;
+  boot.loader.grub.device = "@@bootdev@@";
+  boot.loader.grub.useOSProber = true;
+  boot.tmp.useTmpfs = true;

modules/nixos/defaultConfigs/snippets/bootefi.snippet

@@ -0,0 +1,5 @@
+  # Bootloader.
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.systemd-boot.configurationLimit = 42;
+  boot.loader.efi.canTouchEfiVariables = true;
+  boot.tmp.useTmpfs = true;

modules/nixos/defaultConfigs/snippets/bootgrubcrypt.snippet

@@ -0,0 +1,6 @@
+  # Setup keyfile
+  boot.initrd.secrets = {
+    "/boot/crypto_keyfile.bin" = null;
+  };
+
+  boot.loader.grub.enableCryptodisk = true;

modules/nixos/defaultConfigs/snippets/bootnone.snippet

@@ -0,0 +1,2 @@
+  # Disable bootloader.
+  boot.loader.grub.enable = false;

modules/nixos/defaultConfigs/snippets/connman.snippet

@@ -0,0 +1,2 @@
+  # Enable networking
+  services.connman.enable = true;

modules/nixos/defaultConfigs/snippets/console.snippet

@@ -0,0 +1,2 @@
+  # Configure console keymap
+  console.keyMap = "@@vconsole@@";

modules/nixos/defaultConfigs/snippets/desktopEnv/budgie.snippet

@@ -0,0 +1,6 @@
+  # Enable the X11 windowing system.
+  services.xserver.enable = true;
+
+  # Enable the Budgie Desktop environment.
+  services.xserver.displayManager.lightdm.enable = true;
+  services.xserver.desktopManager.budgie.enable = true;

modules/nixos/defaultConfigs/snippets/desktopEnv/cinnamon.snippet

@@ -0,0 +1,6 @@
+  # Enable the X11 windowing system.
+  services.xserver.enable = true;
+
+  # Enable the Cinnamon Desktop Environment.
+  services.xserver.displayManager.lightdm.enable = true;
+  services.xserver.desktopManager.cinnamon.enable = true;

modules/nixos/defaultConfigs/snippets/desktopEnv/deepin.snippet

@@ -0,0 +1,6 @@
+  # Enable the X11 windowing system.
+  services.xserver.enable = true;
+
+  # Enable the Deepin Desktop Environment.
+  services.xserver.displayManager.lightdm.enable = true;
+  services.xserver.desktopManager.deepin.enable = true;

modules/nixos/defaultConfigs/snippets/desktopEnv/enlightment.snippet

@@ -0,0 +1,9 @@
+  # Enable the X11 windowing system.
+  services.xserver.enable = true;
+
+  # Enable the Enlightenment Desktop Environment.
+  services.xserver.displayManager.lightdm.enable = true;
+  services.xserver.desktopManager.enlightenment.enable = true;
+
+  # Enable acpid
+  services.acpid.enable = true;

modules/nixos/defaultConfigs/snippets/desktopEnv/gnome.snippet

@@ -0,0 +1,6 @@
+  # Enable the X11 windowing system.
+  services.xserver.enable = true;
+
+  # Enable the GNOME Desktop Environment.
+  services.xserver.displayManager.gdm.enable = true;
+  services.xserver.desktopManager.gnome.enable = true;

modules/nixos/defaultConfigs/snippets/desktopEnv/lumina.snippet

@@ -0,0 +1,6 @@
+  # Enable the X11 windowing system.
+  services.xserver.enable = true;
+
+  # Enable the Lumina Desktop Environment.
+  services.xserver.displayManager.lightdm.enable = true;
+  services.xserver.desktopManager.lumina.enable = true;

modules/nixos/defaultConfigs/snippets/desktopEnv/lxqt.snippet

@@ -0,0 +1,6 @@
+  # Enable the X11 windowing system.
+  services.xserver.enable = true;
+
+  # Enable the LXQT Desktop Environment.
+  services.xserver.displayManager.lightdm.enable = true;
+  services.xserver.desktopManager.lxqt.enable = true;

modules/nixos/defaultConfigs/snippets/desktopEnv/mate.snippet

@@ -0,0 +1,6 @@
+  # Enable the X11 windowing system.
+  services.xserver.enable = true;
+
+  # Enable the MATE Desktop Environment.
+  services.xserver.displayManager.lightdm.enable = true;
+  services.xserver.desktopManager.mate.enable = true;

modules/nixos/defaultConfigs/snippets/desktopEnv/pantheon.snippet

@@ -0,0 +1,6 @@
+  # Enable the X11 windowing system.
+  services.xserver.enable = true;
+
+  # Enable the Pantheon Desktop Environment.
+  services.xserver.displayManager.lightdm.enable = true;
+  services.xserver.desktopManager.pantheon.enable = true;

modules/nixos/defaultConfigs/snippets/desktopEnv/plasma5.snippet

@@ -0,0 +1,6 @@
+  # Enable the X11 windowing system.
+  services.xserver.enable = true;
+
+  # Enable the KDE Plasma Desktop Environment.
+  services.xserver.displayManager.sddm.enable = true;
+  services.xserver.desktopManager.plasma5.enable = true;

modules/nixos/defaultConfigs/snippets/desktopEnv/plasma6.snippet

@@ -0,0 +1,7 @@
+  # Enable the X11 windowing system.
+  # You can disable this if you're only using the Wayland session.
+  services.xserver.enable = true;
+
+  # Enable the KDE Plasma Desktop Environment.
+  services.displayManager.sddm.enable = true;
+  services.desktopManager.plasma6.enable = true;

modules/nixos/defaultConfigs/snippets/desktopEnv/xfce.snippet

@@ -0,0 +1,6 @@
+  # Enable the X11 windowing system.
+  services.xserver.enable = true;
+
+  # Enable the XFCE Desktop Environment.
+  services.xserver.displayManager.lightdm.enable = true;
+  services.xserver.desktopManager.xfce.enable = true;

modules/nixos/defaultConfigs/snippets/extra.snippet

@@ -0,0 +1 @@
+  # intentionally empty

modules/nixos/defaultConfigs/snippets/firefox.snippet

@@ -0,0 +1 @@
+  programs.firefox.enable = true;

modules/nixos/defaultConfigs/snippets/head.snippet

@@ -0,0 +1,7 @@
+# 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, ... }:
+
+{

modules/nixos/defaultConfigs/snippets/imports.snippet

@@ -0,0 +1,5 @@
+  imports =
+    [
+      # Include the results of the hardware scan.
+      ./hardware-configuration.nix
+    ];

modules/nixos/defaultConfigs/snippets/keymap.snippet

@@ -0,0 +1,5 @@
+  # Configure keymap in X11
+  services.xserver.xkb = {
+      layout = "@@kblayout@@";
+      variant = "@@kbvariant@@";
+  };

modules/nixos/defaultConfigs/snippets/locale.snippet

@@ -0,0 +1,2 @@
+  # Select internationalisation properties.
+  i18n.defaultLocale = "@@LANG@@";

modules/nixos/defaultConfigs/snippets/localeextra.snippet

@@ -0,0 +1,11 @@
+  i18n.extraLocaleSettings = {
+    LC_ADDRESS = "@@LC_ADDRESS@@";
+    LC_IDENTIFICATION = "@@LC_IDENTIFICATION@@";
+    LC_MEASUREMENT = "@@LC_MEASUREMENT@@";
+    LC_MONETARY = "@@LC_MONETARY@@";
+    LC_NAME = "@@LC_NAME@@";
+    LC_NUMERIC = "@@LC_NUMERIC@@";
+    LC_PAPER = "@@LC_PAPER@@";
+    LC_TELEPHONE = "@@LC_TELEPHONE@@";
+    LC_TIME = "@@LC_TIME@@";
+  };

modules/nixos/defaultConfigs/snippets/misc.snippet

@@ -0,0 +1,5 @@
+  # Enable CUPS to print documents.
+  services.printing.enable = true;
+
+  # Enable touchpad support (enabled default in most desktopManager).
+  # services.xserver.libinput.enable = true;

modules/nixos/defaultConfigs/snippets/network.snippet

@@ -0,0 +1,6 @@
+  networking.hostName = "@@hostname@@"; # Define your hostname.
+  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
+
+  # Configure network proxy if necessary
+  # networking.proxy.default = "http://user:password@proxy:port/";
+  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";

modules/nixos/defaultConfigs/snippets/networkmanager.snippet

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

modules/nixos/defaultConfigs/snippets/nmapplet.snippet

@@ -0,0 +1,2 @@
+  # Enable network manager applet
+  programs.nm-applet.enable = true;

modules/nixos/defaultConfigs/snippets/pkgs.snippet

@@ -0,0 +1,6 @@
+  # List packages installed in system profile. To search, run:
+  # $ nix search wget
+  environment.systemPackages = with pkgs; [
+  #  vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
+  #  wget
+  ];

modules/nixos/defaultConfigs/snippets/tail.snippet

@@ -0,0 +1,28 @@
+  # Some programs need SUID wrappers, can be configured further or are
+  # started in user sessions.
+  # programs.mtr.enable = true;
+  # programs.gnupg.agent = {
+  #   enable = true;
+  #   enableSSHSupport = true;
+  # };
+
+  # List services that you want to enable:
+
+  # Enable the OpenSSH daemon.
+  # services.openssh.enable = true;
+
+  # Open ports in the firewall.
+  # networking.firewall.allowedTCPPorts = [ ... ];
+  # networking.firewall.allowedUDPPorts = [ ... ];
+  # Or disable the firewall altogether.
+  # networking.firewall.enable = false;
+
+  # 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 = "@@nixosversion@@"; # Did you read the comment?
+
+}

modules/nixos/defaultConfigs/snippets/time.snippet

@@ -0,0 +1 @@
+  time.timeZone = "@@timezone@@";

modules/nixos/defaultConfigs/snippets/unfree.snippet

@@ -0,0 +1,2 @@
+  # Allow unfree packages
+  nixpkgs.config.allowUnfree = true;

modules/nixos/defaultConfigs/snippets/users.snippet

@@ -0,0 +1,7 @@
+  # Define a user account. Don't forget to set a password with ‘passwd’.
+  users.users.@@username@@ = {
+    isNormalUser = true;
+    description = "@@fullname@@";
+    extraGroups = [ @@groups@@ ];
+    packages = with pkgs; [@@pkgs@@];
+  };