fix locale and font troubles

home/gnome/default.nix

@@ -1,4 +1,4 @@
-{ config, lib, ... }:
+{ config, lib, osConfig, ... }:
 let
   cfg = config.gnome;
 in
@@ -68,6 +68,10 @@ in
       showWeekNumbers = lib.mkEnableOption { };
     };
     automaticTimeZone = lib.mkEnableOption { };
+    region = lib.mkOption {
+      type = str;
+      default = osConfig.i18n.defaultLocale;
+    };
   };
 
   config = {
@@ -108,6 +112,9 @@ in
       "org/gnome/desktop/datetime" = {
         automatic-timezone = cfg.automaticTimeZone;
       };
+      "system/locale" = {
+        region = cfg.region;
+      };
     } // (
       builtins.listToAttrs (
         lib.lists.imap0