{
  config,
  lib,
  ...
}: let
  cfg = config.soispha.locale;
in {
  options.soispha.locale = {
    enable = lib.mkEnableOption "locale setup";

    keyMap = lib.mkOption {
      type = lib.types.str;
      example = "us";
      default = "dvorak";
      description = "The console key map language to use";
    };

    timeZone = lib.mkOption {
      type = lib.types.str;
      default = "Europe/Berlin";
      description = "The time zone to use";
    };
  };

  config = lib.mkIf cfg.enable {
    time = {
      inherit (cfg) timeZone;
    };

    i18n = {
      defaultLocale = "en_CA.UTF-8";
      extraLocaleSettings = {
        LANGUAGE = "en_CA:en_US:en";
        LC_TIME = "en_DK.UTF-8";
        LC_COLLATE = "C.UTF-8";
      };
    };

    # Layout
    console = {
      inherit (cfg) keyMap;
    };

    services.xserver.xkb.extraLayouts = {
      "us-modified" = {
        description = "standard us with caps as compose key.";
        languages = ["eng" "swe" "deu"];
        symbolsFile = ./keymaps/us_modified.xkb;
      };
      "dvorak-modified" = {
        description = "standard dvorak english with german and swedish extra chars.";
        languages = ["eng" "swe" "deu"];
        symbolsFile = ./keymaps/dvorak_modified.xkb;
      };
    };
  };
}