nixos/modules/system/keymaps/default.nix

{ config, lib, ... }:

with lib;
let
  cfg = config.modules.system.keymaps;
in
{
  options.modules.system.keymaps = {
    layout = mkOption {
      default = "fr";
      example = "fr";
      description = ''
        Set key layout (fr, us)
      '';
      type = types.string;
    };
  };
  config = (import ./${cfg.layout}.nix {});
}