{ ... }:
{
  flake.modules.nixos.systemd-boot =
    { config, pkgs, ... }:
    {
      boot = {
        loader = {
          efi.canTouchEfiVariables = true;
          systemd-boot = {
            enable = true;
            consoleMode = "auto";
            configurationLimit = 5;
            extraInstallCommands = ''
              ENTRIES="${config.boot.loader.efi.efiSysMountPoint}/loader/entries"
              PROFILES="/nix/var/nix/profiles"

              for file in "$ENTRIES"/nixos-generation-*.conf; do
                generation=$(${pkgs.coreutils}/bin/basename "$file" | ${pkgs.gnugrep}/bin/grep -o -E '[0-9]+')
                timestamp=$(${pkgs.coreutils}/bin/stat -c %y "$PROFILES/system-$generation-link" 2>/dev/null | ${pkgs.coreutils}/bin/cut -d. -f1)

                if [ -z "$timestamp" ]; then
                  timestamp="Unknown Date"
                fi

                ${pkgs.gnused}/bin/sed -i "s/^version .*/version Generation $generation - $timestamp/" "$file"
              done
            '';
          };
        };

        tmp.cleanOnBoot = true;
        kernelPackages = pkgs.linuxPackages_latest;
      };
    };
}