{
  lib,
  config,
  options,
  ...
}:

{
  services.swayosd = {
    enable = true;
    package = config.lib.test.mkStubPackage {
      name = "swayosd";
      outPath = "@swayosd@";
    };
    display = "DISPLAY";
    stylePath = "/etc/xdg/swayosd/style.css";
    topMargin = 0.1;
  };

  test.asserts.assertions.expected = [
    ''
      The option definition `services.swayosd.display' in ${lib.showFiles options.services.swayosd.display.files} no longer has any effect; please remove it.
      The --display flag is no longer available in swayosd-server.
    ''
  ];

  nmt.script = ''
    assertFileContent \
      home-files/.config/systemd/user/swayosd.service \
      ${builtins.toFile "swayosd.service" ''
        [Install]
        WantedBy=graphical-session.target

        [Service]
        ExecStart=@swayosd@/bin/swayosd-server --style /etc/xdg/swayosd/style.css --top-margin 0.100000
        Restart=always
        RestartSec=2s
        Type=simple

        [Unit]
        After=graphical-session.target
        ConditionEnvironment=WAYLAND_DISPLAY
        Description=Volume/backlight OSD indicator
        Documentation=man:swayosd(1)
        PartOf=graphical-session.target
        StartLimitBurst=5
        StartLimitIntervalSec=10
      ''}
  '';
}