Adapt locale configuration to new NixOS defaults

modules/default.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 {
   # Options that affect multiple modules
@@ -122,17 +122,15 @@
 
       # Allow users to set allow_other for fuse mounts
       programs.fuse.userAllowOther = true;
+
+      i18n.supportedLocales = (options.i18n.supportedLocales.default) ++ (lib.optionals config.sbruder.full [
+        "de_DE.UTF-8/UTF-8"
+      ]);
     }
     (lib.mkIf config.sbruder.full {
       services.fwupd.enable = true;
     })
     (lib.mkIf (!config.sbruder.full) {
-      # Adapted from nixpkgs/nixos/modules/profiles/minimal.nix
-      i18n.supportedLocales = map
-        (locale: locale + "/UTF-8")
-        ((lib.singleton config.i18n.defaultLocale)
-          ++ (lib.attrValues config.i18n.extraLocaleSettings));
-
       documentation.enable = lib.mkDefault false;
     })
   ];