nixos-config/modules/common/linux.nix

{
  lib,
  config,
  pkgs,
  ...
}:
with lib;
{
  options.useLatestKernel = mkOption {
    type = types.bool;
    default = false;
    example = true;
    description = ''
      Whether or not to use the latest Linux kernel version.
    '';
  };

  options.consoleFont = mkOption {
    type = types.str;
    default = "Lat2-Terminus16";
    description = ''
      The font to use in the Linux console.
    '';
  };

  options.timeZone = mkOption {
    type = types.str;
    default = "Europe/Paris";
    description = ''
      The system time zone.
    '';
  };

  options.locale = mkOption {
    type = types.str;
    default = "en_US.utf8";
    description = ''
      The system locale.
    '';
  };

  options.keymap = mkOption {
    type = types.str;
    default = "fr";
    example = "fr";
    description = ''
      The keyboard map used.
    '';
  };

  config = {
    boot.kernelPackages = mkIf config.useLatestKernel pkgs.linuxPackages_latest;
    time.timeZone = config.timeZone;
    console.font = config.consoleFont;
    console.keyMap = config.keymap;
    i18n.defaultLocale = config.locale;
  };
}