# Release 22.05 (“Quokka”, 2022.05/30) {#sec-release-22.05}

- Support is planned until the end of December 2022, handing over to 22.11.

## Highlights {#sec-release-22.05-highlights}

In addition to numerous new and upgraded packages, this release has the following highlights:

- Nix has been updated from 2.3 to 2.8. This mainly brings experimental support
  for Flakes, but also marks the `nix` command as experimental which now has to
  be enabled via the configuration explicitly. For more information and
  instructions for upgrades, see the
  release notes for [nix-2.4](https://nixos.org/manual/nix/stable/release-notes/rl-2.4.html),
  [nix-2.5](https://nixos.org/manual/nix/stable/release-notes/rl-2.5.html),
  [nix-2.6](https://nixos.org/manual/nix/stable/release-notes/rl-2.6.html),
  [nix-2.7](https://nixos.org/manual/nix/stable/release-notes/rl-2.7.html) and
  [nix-2.8](https://nixos.org/manual/nix/stable/release-notes/rl-2.8.html)

- The `firefox` browser on `x86_64-linux` now makes use of profile-guided
  optimisation, resulting in a much more responsive browsing experience.

- GNOME has been upgraded to 42. Please take a look at their [Release
  Notes](https://release.gnome.org/42/) for details. In particular, it replaces
  gedit with GNOME Text Editor, GNOME Terminal with GNOME Console (formerly
  King's Cross) and GNOME Screenshot by a tool integrated into the Shell.

- PHP 8.1 is now available.

- systemd services can now set [systemd.services.\<name\>.reloadTriggers](#opt-systemd.services) instead of `reloadIfChanged` for a more granular distinction between reloads and restarts.

- Systemd has been upgraded to the version 250.

- Pulseaudio has been updated to version 15.0 and now optionally
  [supports additional Bluetooth audio codecs](https://www.freedesktop.org/wiki/Software/PulseAudio/Notes/15.0/#supportforldacandaptxbluetoothcodecsplussbcxqsbcwithhigher-qualityparameters)
  such as aptX or LDAC, with codec switching available in `pavucontrol`. This
  feature is disabled by default, but can be enabled with the option
  `hardware.pulseaudio.package = pkgs.pulseaudioFull;`. Existing third-party
  modules that offered similar functions, such as `pulseaudio-modules-bt` or
  `pulseaudio-hsphfpd`, are obsolete and have been removed.

- PostgreSQL now defaults to major version 14.

- Module authors can use `mkRenamedOptionModuleWith` to automate the deprecation cycle without annoying out-of-tree module authors and their users.

- The default GHC version has been updated from 8.10.7 to 9.0.2. `pkgs.haskellPackages` and `pkgs.ghc` will now use this version by default.

- The GNOME and Plasma installation CDs now use `pkgs.calamares` and `pkgs.calamares-nixos-extensions` to allow users to easily install and set up NixOS with a GUI.

- `security.acme.defaults` has been added to simplify the configuration of
  settings for many certificates at once. This also opens up the option to use
  DNS-01 validation when using `enableACME` web server virtual hosts (e.g.
  `services.nginx.virtualHosts.*.enableACME`).

## New Services {#sec-release-22.05-new-services}

- [1password](https://1password.com/), command-lines and graphic interface for 1Password. Available as [programs._1password](#opt-programs._1password.enable) and [programs._1password-gui](#opt-programs._1password.enable).

- [aesmd](https://github.com/intel/linux-sgx#install-the-intelr-sgx-psw), the Intel SGX Architectural Enclave Service Manager. Available as [services.aesmd](#opt-services.aesmd.enable).

- [agate](https://github.com/mbrubeck/agate), a very simple server for the Gemini hypertext protocol. Available as [services.agate](#opt-services.agate.enable).

- [apfs](https://github.com/linux-apfs/linux-apfs-rw), a kernel module for mounting the Apple File System (APFS).

- [argonone](https://gitlab.com/DarkElvenAngel/argononed), a replacement daemon for the Raspberry Pi Argon One power button and cooler. Available at [services.hardware.argonone](options.html#opt-services.hardware.argonone.enable).