{ pkgs, ... }: { i18n.defaultLocale = "en_US.UTF-8"; i18n.extraLocaleSettings = { LC_ADDRESS = "en_US.UTF-8"; LC_IDENTIFICATION = "en_US.UTF-8"; LC_MEASUREMENT = "en_US.UTF-8"; LC_MONETARY = "en_US.UTF-8"; LC_NAME = "en_US.UTF-8"; LC_NUMERIC = "en_US.UTF-8"; LC_PAPER = "en_US.UTF-8"; LC_TELEPHONE = "en_US.UTF-8"; LC_TIME = "en_US.UTF-8"; }; i18n.supportedLocales = [ "en_US.UTF-8/UTF-8" ]; i18n.inputMethod = { enable = true; type = "fcitx5"; fcitx5.addons = with pkgs; [ fcitx5-gtk fcitx5-mozc # Japanese fcitx5-chinese-addons fcitx5-rime # Bopomofo rime-data ]; }; }