In addition to numerous new and upgraded packages, this release has the following highlights: Support is planned until the end of June 2022, handing over to 22.05.

PHP now defaults to PHP 8.0, updated from 7.4. kOps now defaults to 1.21.0, which uses containerd as the default runtime. python3 now defaults to Python 3.9, updated from Python 3.8. PostgreSQL now defaults to major version 13.

btrbk, a backup tool for btrfs subvolumes, taking advantage of btrfs specific capabilities to create atomic snapshots and transfer them incrementally to your backup locations. Available as services.btrbk. clipcat, an X11 clipboard manager written in Rust. Available at [services.clipcat](options.html#o pt-services.clipcat.enable). geoipupdate, a GeoIP database updater from MaxMind. Available as services.geoipupdate. Kea, ISCs 2nd generation DHCP and DDNS server suite. Available at services.kea. sourcehut, a collection of tools useful for software development. Available as services.sourcehut. ucarp, an userspace implementation of the Common Address Redundancy Protocol (CARP). Available as networking.ucarp. Users of flashrom should migrate to programs.flashrom.enable and add themselves to the flashrom group to be able to access programmers supported by flashrom. vikunja, a to-do list app. Available as services.vikunja. snapraid, a backup program for disk arrays. Available as snapraid. Hockeypuck, a OpenPGP Key Server. Available as services.hockeypuck. buildkite-agent-metrics, a command-line tool for collecting Buildkite agent metrics, now has a Prometheus exporter available as services.prometheus.exporters.buildkite-agent. influxdb-exporter a Prometheus exporter that exports metrics received on an InfluxDB compatible endpoint is now available as services.prometheus.exporters.influxdb. mx-puppet-discord, a discord puppeting bridge for matrix. Available as services.mx-puppet-discord. MeshCentral, a remote administration service (TeamViewer but self-hosted and with more features) is now available with a package and a module: services.meshcentral.enable moonraker, an API web server for Klipper. Available as moonraker.

The staticjinja package has been upgraded from 1.0.4 to 3.0.1 services.geoip-updater was broken and has been replaced by services.geoipupdate. PHP 7.3 is no longer supported due to upstream not supporting this version for the entire lifecycle of the 21.11 release. Those making use of buildBazelPackage will need to regenerate the fetch hashes (preferred), or set fetchConfigured = false;. consul was upgraded to a new major release with breaking changes, see upstream changelog. fsharp41 has been removed in preference to use the latest dotnet-sdk The following F#-related packages have been removed for being unmaintaned. Please use fetchNuGet for specific packages. ExtCore Fake Fantomas FsCheck FsCheck262 FsCheckNunit FSharpAutoComplete FSharpCompilerCodeDom FSharpCompilerService FSharpCompilerTools FSharpCore302 FSharpCore3125 FSharpCore4001 FSharpCore4117 FSharpData FSharpData225 FSharpDataSQLProvider FSharpFormatting FsLexYacc FsLexYacc706 FsLexYaccRuntime FsPickler FsUnit Projekt Suave UnionArgParser ExcelDnaRegistration MathNetNumerics programs.x2goserver is now services.x2goserver The following dotnet-related packages have been removed for being unmaintaned. Please use fetchNuGet for specific packages. Autofac SystemValueTuple MicrosoftDiaSymReader MicrosoftDiaSymReaderPortablePdb SystemCollectionsImmutable SystemCollectionsImmutable131 SystemReflectionMetadata NUnit350 Deedle ExcelDna GitVersionTree NDeskOptions The antlr package now defaults to the 4.x release instead of the old 2.7.7 version. The pulseeffects package updated to version 4.x and renamed to easyeffects. The libwnck package now defaults to the 3.x release instead of the old 2.31.0 version. The bitwarden_rs packages and modules were renamed to vaultwarden following upstream. More specifically, pkgs.bitwarden_rs, pkgs.bitwarden_rs-sqlite, pkgs.bitwarden_rs-mysql and pkgs.bitwarden_rs-postgresql were renamed to pkgs.vaultwarden, pkgs.vaultwarden-sqlite, pkgs.vaultwarden-mysql and pkgs.vaultwarden-postgresql, respectively. Old names are preserved as aliases for backwards compatibility, but may be removed in the future. The bitwarden_rs executable was also renamed to vaultwarden in all packages. pkgs.bitwarden_rs-vault was renamed to pkgs.vaultwarden-vault. pkgs.bitwarden_rs-vault is preserved as an alias for backwards compatibility, but may be removed in the future. The static files were moved from /usr/share/bitwarden_rs to /usr/share/vaultwarden. The services.bitwarden_rs config module was renamed to services.vaultwarden. services.bitwarden_rs is preserved as an alias for backwards compatibility, but may be removed in the future. systemd.services.bitwarden_rs, systemd.services.backup-bitwarden_rs and systemd.timers.backup-bitwarden_rs were renamed to systemd.services.vaultwarden, systemd.services.backup-vaultwarden and systemd.timers.backup-vaultwarden, respectively. Old names are preserved as aliases for backwards compatibility, but may be removed in the future. users.users.bitwarden_rs and users.groups.bitwarden_rs were renamed to users.users.vaultwarden and users.groups.vaultwarden, respectively. The data directory remains located at /var/lib/bitwarden_rs, for backwards compatibility. yggdrasil was upgraded to a new major release with breaking changes, see upstream changelog. icingaweb2 was upgraded to a new release which requires a manual database upgrade, see upstream changelog. The isabelle package has been upgraded from 2020 to 2021 the mingw-64 package has been upgraded from 6.0.0 to 9.0.0 tt-rss was upgraded to the commit on 2021-06-21, which has breaking changes. If you use services.tt-rss.extraConfig you should migrate to the putenv-style configuration. See this Discourse post in the tt-rss forums for more details. The following Visual Studio Code extensions were renamed to keep the naming convention uniform. bbenoist.Nix -> bbenoist.nix CoenraadS.bracket-pair-colorizer -> coenraads.bracket-pair-colorizer golang.Go -> golang.go services.uptimed now uses /var/lib/uptimed as its stateDirectory instead of /var/spool/uptimed. Make sure to move all files to the new directory. Deprecated package aliases in emacs.pkgs.* have been removed. These aliases were remnants of the old Emacs package infrastructure. We now use exact upstream names wherever possible. programs.neovim.runtime switched to a linkFarm internally, making it impossible to use wildcards in the source argument. The openrazer and openrazer-daemon packages as well as the hardware.openrazer module now require users to be members of the openrazer group instead of plugdev. With this change, users no longer need be granted the entire set of plugdev group permissions, which can include permissions other than those required by openrazer. This is desirable from a security point of view. The setting harware.openrazer.users can be used to add users to the openrazer group. The yambar package has been split into yambar and yambar-wayland, corresponding to the xorg and wayland backend respectively. Please switch to yambar-wayland if you are on wayland.

The setting services.openssh.logLevel "VERBOSE" "INFO". This brings NixOS in line with upstream and other Linux distributions, and reduces log spam on servers due to bruteforcing botnets. However, if services.fail2ban.enable is true, the fail2ban will override the verbosity to "VERBOSE", so that fail2ban can observe the failed login attempts from the SSH logs. Sway: The terminal emulator rxvt-unicode is no longer installed by default via programs.sway.extraPackages. The current default configuration uses alacritty (and soon foot) so this is only an issue when using a customized configuration and not installing rxvt-unicode explicitly. python3 now defaults to Python 3.9. Python 3.9 introduces many deprecation warnings, please look at the What’s New In Python 3.9 post for more information. The claws-mail package now references the new GTK+ 3 release branch, major version 4. To use the GTK+ 2 releases, one can install the claws-mail-gtk2 package. The wordpress module provides a new interface which allows to use different webservers with the new option services.wordpress.webserver. Currently httpd and nginx are supported. The definitions of wordpress sites should now be set in services.wordpress.sites. Sites definitions that use the old interface are automatically migrated in the new option. This backward compatibility will be removed in 22.05. The order of NSS (host) modules has been brought in line with upstream recommendations: The myhostname module is placed before the resolve (optional) and dns entries, but after file (to allow overriding via /etc/hosts / networking.extraHosts, and prevent ISPs with catchall-DNS resolvers from hijacking .localhost domains) The mymachines module, which provides hostname resolution for local containers (registered with systemd-machined) is placed to the front, to make sure its mappings are preferred over other resolvers. If systemd-networkd is enabled, the resolve module is placed before files and myhostname, as it provides the same logic internally, with caching. The mdns(_minimal) module has been updated to the new priorities. If you use your own NSS host modules, make sure to update your priorities according to these rules: NSS modules which should be queried before resolved DNS resolution should use mkBefore. NSS modules which should be queried after resolved, files and myhostname, but before dns should use the default priority NSS modules which should come after dns should use mkAfter. The networking.wireless.iwd module has a new networking.wireless.iwd.settings option. The services.syncoid.enable module now properly drops ZFS permissions after usage. Before it delegated permissions to whole pools instead of datasets and didn’t clean up after execution. You can manually look this up for your pools by running zfs allow your-pool-name and use zfs unallow syncoid your-pool-name to clean this up. Zfs: latestCompatibleLinuxPackages is now exported on the zfs package. One can use boot.kernelPackages = config.boot.zfs.package.latestCompatibleLinuxPackages; to always track the latest compatible kernel with a given version of zfs. Nginx will use the value of sslTrustedCertificate if provided for a virtual host, even if enableACME is set. This is useful for providers not using the same certificate to sign OCSP responses and server certificates.