pipa-nixos/modules/debug.nix

{
  config,
  lib,
  pkgs,
  ...
}: {
  options.hardware.pipa.debugMode = lib.mkEnableOption "USB Ethernet and Serial Debugging via ttyGS0";

  config = lib.mkIf config.hardware.pipa.debugMode {
    boot = {
      kernelModules = ["g_ether"];
      kernelParams = ["console=ttyGS0"];
    };

    systemd.services."serial-getty@ttyGS0" = {
      enable = true;
      wantedBy = ["getty.target"];
    };

    systemd.services.NetworkManager-wait-online.enable = false;

    networking.localCommands = ''
      ${pkgs.iproute2}/bin/ip addr add 192.168.7.2/24 dev usb0 || true
      ${pkgs.iproute2}/bin/ip link set dev usb0 up || true
    '';

    users.users.nixos = {
      openssh.authorizedKeys.keys = [
        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDOwnOKjUpX6gFdSeNkDEETezAhPtHgVfFO0GO44YeD7 roman.lubij@gmail.com"
      ];
    };
  };
}