- [tts](https://github.com/coqui-ai/TTS), a battle-tested deep learning toolkit for Text-to-Speech. Multiple servers may be configured below [services.tts.servers](#opt-services.tts.servers).

- [ulogd](https://www.netfilter.org/projects/ulogd/index.html), a userspace logging daemon for netfilter/iptables related logging. Available as [services.ulogd](options.html#opt-services.ulogd.enable).

- [v2rayA](https://v2raya.org), a Linux web GUI client of Project V which supports V2Ray, Xray, SS, SSR, Trojan and Pingtunnel. Available as [services.v2raya](options.html#opt-services.v2raya.enable).

- [v4l2-relayd](https://git.launchpad.net/v4l2-relayd), a streaming relay for v4l2loopback using gstreamer. Available as [services.v4l2-relayd](#opt-services.v4l2-relayd.instances._name_.enable).

- [vault-agent](https://developer.hashicorp.com/vault/docs/agent), a template renderer and API auth proxy for HashiCorp Vault, similar to `consul-template`. Available as [services.vault-agent](#opt-services.vault-agent.instances).

- [webhook](https://github.com/adnanh/webhook), a lightweight webhook server. Available as [services.webhook](#opt-services.webhook.enable).

- [wgautomesh](https://git.deuxfleurs.fr/Deuxfleurs/wgautomesh), a simple utility to help connect wireguard nodes together in a full mesh topology. Available as [services.wgautomesh](options.html#opt-services.wgautomesh.enable).

- [woodpecker](https://woodpecker-ci.org/), a simple CI engine with great extensibility. Available as [services.woodpecker-server](#opt-services.woodpecker-server.enable) and [services.woodpecker-agents](#opt-services.woodpecker-agents.agents._name_.enable).

- [wstunnel](https://github.com/erebe/wstunnel), a proxy tunnelling arbitrary TCP or UDP traffic through a WebSocket connection. Available as [services.wstunnel](options.html#opt-services.wstunnel.enable).

## Backward Incompatibilities {#sec-release-23.05-incompatibilities}

- `services.asusd` configuration now uses strings instead of structured configuration, as upstream switched to the [RON](https://github.com/ron-rs/ron) configuration format. Support for structured configuration may return when [RON](https://github.com/ron-rs/ron) generation is implemented in nixpkgs.

- `borgbackup` module now has an option for inhibiting system sleep while backups are running, defaulting to off (not inhibiting sleep), available as [`services.borgbackup.jobs.<name>.inhibitsSleep`](#opt-services.borgbackup.jobs._name_.inhibitsSleep).

- The `openssh` client now comes with the `~C` escape sequence disabled by default. It can be re-enabled by setting `EnableEscapeCommandline yes`

- The `programs.ssh` client module does not read `/etc/ssh/ssh_known_hosts2` anymore, since this location is [deprecated since 2001](https://marc.info/?l=openssh-unix-dev&m=100508718416162&w=2).

- The `services.openssh` server module does not read `~/.ssh/authorized_keys2` anymore, since this location is [deprecated since 2001](https://marc.info/?l=openssh-unix-dev&m=100508718416162&w=2).

- MAC-then-encrypt algorithms were removed from the default selection of `services.openssh.settings.Macs`. If you still require these [MACs](https://en.wikipedia.org/wiki/Message_authentication_code), for example when you are relying on libssh2 (e.g. VLC) or the SSH library shipped on the iPhone, you can re-add them like this:

  ```nix
  {
    services.openssh.settings.Macs = [
      "hmac-sha2-512"
      "hmac-sha2-256"
      "umac-128@openssh.com"
    ];
  }
  ```

- `podman` now uses the `netavark` network stack. Users will need to delete all of their local containers, images, volumes, etc, by running `podman system reset --force` once before upgrading their systems.

- `git-bug` has been updated to at least version 0.8.0, which includes backwards incompatible changes. The `git-bug-migration` package can be used to upgrade existing repositories.

- `graylog` has been updated to version 5, which can not be updated directly from the previously packaged version 3.3. If you had installed the previously packaged version 3.3, please follow the [upgrade path](https://go2docs.graylog.org/5-0/upgrading_graylog/upgrade_path.htm) from 3.3 to 4.0 to 4.3 to 5.0.