home-manager/tests/modules/services/macos-remap-keys/basic-configuration.nix

{
  services.macos-remap-keys = {
    enable = true;
    keyboard = { Capslock = "Backspace"; };
  };

  nmt.script = ''
    launchAgent=LaunchAgents/org.nix-community.home.remap-keys.plist
    assertFileExists "$launchAgent"
    assertFileContent "$launchAgent" ${./basic-agent.plist}
  '';
}