snowfall lib migration WIP

modules/nixos/presets/default/default.nix

@@ -0,0 +1,79 @@
+{
+  lib,
+  pkgs,
+  namespace,
+  config,
+  ...
+}:
+with lib;
+with lib.${namespace}; let
+  cfg = config.${namespace}.presets.default;
+in {
+  options.${namespace}.presets.default = with types; {
+    enable = mkBoolOpt false "Enable preset with all the default settings - locale, time, etc";
+  };
+
+  config = mkIf cfg.enable {
+    # Set your time zone.
+    time.timeZone = "Europe/Berlin";
+
+    # Select internationalisation properties.
+    i18n.defaultLocale = "ru_RU.UTF-8";
+
+    i18n.extraLocaleSettings = {
+      LC_ADDRESS = "de_DE.UTF-8";
+      LC_IDENTIFICATION = "de_DE.UTF-8";
+      LC_MEASUREMENT = "de_DE.UTF-8";
+      LC_MONETARY = "de_DE.UTF-8";
+      LC_NAME = "de_DE.UTF-8";
+      LC_NUMERIC = "de_DE.UTF-8";
+      LC_PAPER = "de_DE.UTF-8";
+      LC_TELEPHONE = "de_DE.UTF-8";
+      LC_TIME = "de_DE.UTF-8";
+    };
+    programs.nh = {
+      enable = true;
+      clean.enable = true;
+      clean.extraArgs = "--keep-since 4d --keep 3";
+      flake = "/etc/nixos-config";
+    };
+    environment.systemPackages = with pkgs; [
+      nix-output-monitor
+      fzf
+      lazygit
+      git
+      btop
+      comma
+      snowfallorg.flake
+    ];
+    programs.bash = {
+      shellAliases = {
+        ls = "${pkgs.eza}/bin/eza --icons=always";
+      };
+    };
+    # Configure keymap in X11
+    services.xserver.xkb = {
+      layout = "us,ru";
+      variant = "";
+      options = "grp:caps_toggle";
+    };
+    console.keyMap = "us";
+    nix = {
+      settings = {
+        experimental-features = [
+          "nix-command"
+          "flakes"
+        ];
+        auto-optimise-store = true;
+        substituters = [
+          "https://nix-gaming.cachix.org"
+          "https://nix-community.cachix.org"
+        ];
+        trusted-public-keys = [
+          "nix-gaming.cachix.org-1:nbjlureqMbRAxR1gJ/f3hxemL9svXaZF/Ees8vCUUs4="
+          "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+        ];
+      };
+    };
+  };
+}