nixpkgs/nixos/tests/greetd-no-shadow.nix

import ./make-test-python.nix ({ pkgs, latestKernel ? false, ... }:
{
  name = "greetd-no-shadow";
  meta = with pkgs.lib.maintainers; {
    maintainers = [ ];
  };

  nodes.machine =
    { pkgs, lib, ... }: {

      users.users.alice = {
        isNormalUser = true;
        group = "alice";
        password = "foobar";
      };
      users.groups.alice = {};

      # This means login(1) breaks, so we must use greetd/agreety instead.
      security.shadow.enable = false;

      services.greetd = {
        enable = true;
        settings = {
          default_session = {
            command = "${pkgs.greetd.greetd}/bin/agreety --cmd bash";
          };
        };
      };
    };

  testScript = ''
      machine.start()

      machine.wait_for_unit("multi-user.target")
      machine.wait_until_succeeds("pgrep -f 'agretty.*tty1'")
      machine.screenshot("postboot")

      with subtest("Log in as alice on a virtual console"):
          machine.wait_until_tty_matches("1", "login: ")
          machine.send_chars("alice\n")
          machine.wait_until_tty_matches("1", "login: alice")
          machine.wait_until_succeeds("pgrep login")
          machine.wait_until_tty_matches("1", "Password: ")
          machine.send_chars("foobar\n")
          machine.wait_until_succeeds("pgrep -u alice bash")
          machine.send_chars("touch done\n")
          machine.wait_for_file("/home/alice/done")
  '';
})