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4th chunk of `nixos/doc/manual/release-notes/rl-2111.section.md`
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- [fluidd](https://docs.fluidd.xyz/), a Klipper web interface for managing 3d printers using moonraker. Available as [fluidd](#opt-services.fluidd.enable).

- [sx](https://github.com/earnestly/sx), a simple alternative to both xinit and startx for starting a Xorg server. Available as [services.xserver.displayManager.sx](#opt-services.xserver.displayManager.sx.enable)

- [postfixadmin](https://postfixadmin.sourceforge.io/), a web based virtual user administration interface for Postfix mail servers. Available as [postfixadmin](#opt-services.postfixadmin.enable).

- [prowlarr](https://wiki.servarr.com/prowlarr), an indexer manager/proxy built on the popular arr .net/reactjs base stack [services.prowlarr](#opt-services.prowlarr.enable).

- [soju](https://sr.ht/~emersion/soju), a user-friendly IRC bouncer. Available as [services.soju](options.html#opt-services.soju.enable).

- [nats](https://nats.io/), a high performance cloud and edge messaging system. Available as [services.nats](#opt-services.nats.enable).

- [git](https://git-scm.com), a distributed version control system. Available as [programs.git](options.html#opt-programs.git.enable).

- [parsedmarc](https://domainaware.github.io/parsedmarc/), a service
  which parses incoming [DMARC](https://dmarc.org/) reports and stores
  or sends them to a downstream service for further analysis.
  Documented in [its manual entry](#module-services-parsedmarc).

- [spark](https://spark.apache.org/), a unified analytics engine for large-scale data processing.

- [touchegg](https://github.com/JoseExposito/touchegg), a multi-touch gesture recognizer. Available as [services.touchegg](#opt-services.touchegg.enable).

- [pantheon-tweaks](https://github.com/pantheon-tweaks/pantheon-tweaks), an unofficial system settings panel for Pantheon. Available as `programs.pantheon-tweaks`.

- [joycond](https://github.com/DanielOgorchock/joycond), a service that uses `hid-nintendo` to provide nintendo joycond pairing and better nintendo switch pro controller support.

- [multipath](https://github.com/opensvc/multipath-tools), the device mapper multipath (DM-MP) daemon. Available as [services.multipath](#opt-services.multipath.enable).

- [seafile](https://www.seafile.com/en/home/), an open source file syncing & sharing software. Available as [services.seafile](options.html#opt-services.seafile.enable).

- [rasdaemon](https://github.com/mchehab/rasdaemon), a hardware error logging daemon. Available as [hardware.rasdaemon](#opt-hardware.rasdaemon.enable).

- `code-server`-module now available

- [xmrig](https://github.com/xmrig/xmrig), a high performance, open source, cross platform RandomX, KawPow, CryptoNight and AstroBWT unified CPU/GPU miner and RandomX benchmark.

- Auto nice daemons [ananicy](https://github.com/Nefelim4ag/Ananicy) and [ananicy-cpp](https://gitlab.com/ananicy-cpp/ananicy-cpp/). Available as [services.ananicy](#opt-services.ananicy.enable).

- [smartctl_exporter](https://github.com/prometheus-community/smartctl_exporter), a Prometheus exporter for [S.M.A.R.T.](https://en.wikipedia.org/wiki/S.M.A.R.T.) data. Available as [services.prometheus.exporters.smartctl](options.html#opt-services.prometheus.exporters.smartctl.enable).

- [twingate](https://docs.twingate.com/docs/linux), a high performance, easy to use zero trust solution that enables access to private resources from any device with better security than a VPN.

## Backward Incompatibilities {#sec-release-21.11-incompatibilities}

- The NixOS VM test framework, `pkgs.nixosTest`/`make-test-python.nix` (`pkgs.testers.nixosTest` since 22.05), now requires detaching commands such as `succeed("foo &")` and `succeed("foo | xclip -i")` to close stdout.
  This can be done with a redirect such as `succeed("foo >&2 &")`. This breaking change was necessitated by a race condition causing tests to fail or hang.
  It applies to all methods that invoke commands on the nodes, including `execute`, `succeed`, `fail`, `wait_until_succeeds`, `wait_until_fails`.
Title: More New Services and Backward Incompatibilities in NixOS
Summary
This section continues listing newly available services in NixOS, including fluidd, sx, postfixadmin, prowlarr, soju, nats, git, parsedmarc, spark, touchegg, pantheon-tweaks, joycond, multipath, seafile, rasdaemon, code-server module, xmrig, ananicy/ananicy-cpp, smartctl_exporter, and twingate. The section concludes by detailing a backward incompatibility in the NixOS VM test framework requiring commands to detach properly to close stdout, affecting methods like execute, succeed, fail, wait_until_succeeds, and wait_until_fails.