- emacs packages from nixpkgs, builtin or not, will do native compilation ahead of time so you can enjoy the benefit of native compilation without compiling them on you machine;
- emacs packages from somewhere else, e.g. `package-install`, will do asynchronously deferred native compilation. If you do not want this, maybe to avoid CPU consumption for compilation, you can use `(setq native-comp-deferred-compilation nil)` to disable it while still enjoy the benefit of native compilation for packages from nixpkgs.
- Improved performances of `lib.closePropagation` which was previously quadratic. This is used in e.g. `ghcWithPackages`. Please see backward incompatibilities notes below.
-`hardware.nvidia` has a new option `open` that can be used to opt in the opensource version of NVIDIA kernel driver. Note that the driver's support for GeForce and Workstation GPUs is still alpha quality, see [NVIDIA Releases Open-Source GPU Kernel Modules](https://developer.nvidia.com/blog/nvidia-releases-open-source-gpu-kernel-modules/) for the official announcement.
- [xray] (https://github.com/XTLS/Xray-core), a fully compatible v2ray-core replacement. Features XTLS, which when enabled on server and client, brings UDP FullCone NAT to proxy setups. Available as [services.xray](options.html#opt-services.xray.enable).
- [syncstorage-rs](https://github.com/mozilla-services/syncstorage-rs), a self-hostable sync server for Firefox. Available as [services.firefox-syncserver](options.html#opt-services.firefox-syncserver.enable).
- [dragonflydb](https://dragonflydb.io/), a modern replacement for Redis and Memcached. Available as [services.dragonflydb](#opt-services.dragonflydb.enable).
- [Tandoor Recipes](https://tandoor.dev), a self-hosted multi-tenant recipe collection. Available as [services.tandoor-recipes](options.html#opt-services.tandoor-recipes.enable).
- [HBase cluster](https://hbase.apache.org/), a distributed, scalable, big data store. Available as [services.hadoop.hbase](options.html#opt-services.hadoop.hbase.enable).
- [Sachet](https://github.com/messagebird/sachet/), an SMS alerting tool for the Prometheus Alertmanager. Available as [services.prometheus.sachet](#opt-services.prometheus.sachet.enable).
- [kthxbye](https://github.com/prymitive/kthxbye), an alert acknowledgement management daemon for Prometheus Alertmanager. Available as [services.kthxbye](options.html#opt-services.kthxbye.enable)
- [karma](https://github.com/prymitive/karma), an alert dashboard for Prometheus Alertmanager. Available as [services.karma](options.html#opt-services.karma.enable)
- [OpenRGB](https://gitlab.com/CalcProgrammer1/OpenRGB/-/tree/master), a FOSS tool for controlling RGB lighting. Available as [services.hardware.openrgb.enable](options.html#opt-services-hardware-openrgb-enable).
- [endlessh-go](https://github.com/shizunge/endlessh-go), an SSH tarpit that exposes Prometheus metrics. Available as [services.endlessh-go](#opt-services.endlessh-go.enable).
- [Garage](https://garagehq.deuxfleurs.fr/), a simple object storage server for geodistributed deployments, alternative to MinIO. Available as [services.garage](#opt-services.garage.enable).
- [persistent-evdev](https://github.com/aiberia/persistent-evdev), a daemon to add virtual proxy devices that mirror a physical input device but persist even if the underlying hardware is hot-plugged. Available as [services.persistent-evdev](#opt-services.persistent-evdev.enable).
- [Dolibarr](https://www.dolibarr.org/), an enterprise resource planning and customer relationship manager. Enable using [services.dolibarr](#opt-services.dolibarr.enable).
- [merecat](https://troglobit.com/projects/merecat/), a small and easy HTTP server based on thttpd. Available as [services.merecat](#opt-services.merecat.enable)
- [go-autoconfig](https://github.com/L11R/go-autoconfig), IMAP/SMTP autodiscover server. Available as [services.go-autoconfig](#opt-services.go-autoconfig.enable).
- [tmate-ssh-server](https://github.com/tmate-io/tmate-ssh-server), server side part of [tmate](https://tmate.io/). Available as [services.tmate-ssh-server](#opt-services.tmate-ssh-server.enable).
- [AusweisApp2](https://www.ausweisapp.bund.de/), the authentication software for the German ID card. Available as [programs.ausweisapp](#opt-programs.ausweisapp.enable).
- [Prometheus IPMI exporter](https://github.com/prometheus-community/ipmi_exporter), an IPMI exporter for Prometheus. Available as [services.prometheus.exporters.ipmi](#opt-services.prometheus.exporters.ipmi.enable).
- [WriteFreely](https://writefreely.org), a simple blogging platform with ActivityPub support. Available as [services.writefreely](options.html#opt-services.writefreely.enable).
- [Mepo](https://mepo.milesalan.com), a fast, simple, hackable OSM map viewer for mobile and desktop Linux. Available as [programs.mepo.enable](#opt-programs.mepo.enable).
- The `isPowerPC` predicate, found on `platform` attrsets (`hostPlatform`, `buildPlatform`, `targetPlatform`, etc) has been removed in order to reduce confusion. The predicate was was defined such that it matches only the 32-bit big-endian members of the POWER/PowerPC family, despite having a name which would imply a broader set of systems. If you were using this predicate, you can replace `foo.isPowerPC` with `(with foo; isPower && is32bit && isBigEndian)`.
- The `fetchgit` fetcher now uses [cone mode](https://www.git-scm.com/docs/git-sparse-checkout/2.37.0#_internalscone_mode_handling) by default for sparse checkouts. [Non-cone mode](https://www.git-scm.com/docs/git-sparse-checkout/2.37.0#_internalsnon_cone_problems) can be enabled by passing `nonConeMode = true`, but note that non-cone mode is deprecated and this option may be removed alongside a future Git update without notice.
-`openssh` was updated to version 9.1, disabling the generation of DSA keys when using `ssh-keygen -A` as they are insecure. Also, `SetEnv` directives in `ssh_config` and `sshd_config` are now first-match-wins
- The Barco ClickShare driver/client package `pkgs.clickshare-csc1` and the option `programs.clickshare-csc1.enable` have been removed,
as it requires `qt4`, which reached its end-of-life 2015 and will no longer be supported by nixpkgs.
[According to Barco](https://www.barco.com/de/support/knowledge-base/4380-can-i-use-linux-os-with-clickshare-base-units) many of their base unit models can be used with Google Chrome and the Google Cast extension.
- The `p4` package now only includes the open-source Perforce Helix Core command-line client and APIs. It no longer installs the unfree Helix Core Server binaries `p4d`, `p4broker`, and `p4p`. To install the Helix Core Server binaries, use the `p4d` package instead.
- The ipfs package and module were renamed to kubo. The kubo module now uses an RFC42-style `settings` option instead of `extraConfig` and the `gatewayAddress`, `apiAddress` and `swarmAddress` options were renamed. Using the old names will print a warning but still work.
- ppd files in `pkgs.cups-drv-rastertosag-gdi` are now gzipped. If you refer to such a ppd file with its path (e.g. via [hardware.printers.ensurePrinters](options.html#opt-hardware.printers.ensurePrinters)) you will need to append `.gz` to the path.
- xow package removed along with the `hardware.xow` module, due to the project being deprecated in favor of `xone`, which is available via the `hardware.xone` module.
- dd-agent package removed along with the `services.dd-agent` module, due to the project being deprecated in favor of `datadog-agent`, which is available via the `services.datadog-agent` module.
-`teleport` has been upgraded to major version 10. Please see upstream [upgrade instructions](https://goteleport.com/docs/ver/10.0/management/operations/upgrading/) and [release notes](https://goteleport.com/docs/ver/10.0/changelog/#1000).
- The [CEmu TI-84 Plus CE emulator](https://ce-programming.github.io/CEmu) package has been renamed to `cemu-ti`. The [Cemu Wii U emulator](https://cemu.info) is now packaged as `cemu`.
-`systemd-networkd` v250 deprecated, renamed, and moved some sections and settings which leads to the following breaking module changes:
*`systemd.network.networks.<name>.dhcpV6PrefixDelegationConfig` is renamed to `systemd.network.networks.<name>.dhcpPrefixDelegationConfig`.
*`systemd.network.networks.<name>.dhcpV6Config` no longer accepts the `ForceDHCPv6PDOtherInformation=` setting. Please use the `WithoutRA=` and `UseDelegatedPrefix=` settings in your `systemd.network.networks.<name>.dhcpV6Config` and the `DHCPv6Client=` setting in your `systemd.network.networks.<name>.ipv6AcceptRAConfig` to control when the DHCPv6 client is started and how the delegated prefixes are handled by the DHCPv6 client.
*`systemd.network.networks.<name>.networkConfig` no longer accepts the `IPv6Token=` setting. Use the `Token=` setting in your `systemd.network.networks.<name>.ipv6AcceptRAConfig` instead. The `systemd.network.networks.<name>.ipv6Prefixes.*.ipv6PrefixConfig` now also accepts the `Token=` setting.
-`arangodb` versions 3.3, 3.4, and 3.5 have been removed because they are at EOL upstream. The default is now 3.10.0. Support for aarch64-linux has been removed since the target cannot be built reproducibly. By default `arangodb` is now built for the `haswell` architecture. If you wish to build for a different architecture, you may override the `targetArchitecture` argument with a value from [this list supported upstream](https://github.com/arangodb/arangodb/blob/207ec6937e41a46e10aea34953879341f0606841/cmake/OptimizeForArchitecture.cmake#L594). Some architecture specific optimizations are also conditionally enabled. You may alter this behavior by overriding the `asmOptimizations` parameter. You may also add additional architecture support by adding more `-DHAS_XYZ` flags to `cmakeFlags` via `overrideAttrs`.
-`cassandra_2_1` and `cassandra_2_2` have been removed. Please update to `cassandra_3_11` or `cassandra_3_0`. See the [changelog](https://github.com/apache/cassandra/blob/cassandra-3.11.14/NEWS.txt) for more information about the upgrade process.
-`mysql57` has been removed. Please update to `mysql80` or `mariadb`. See the [upgrade guide](https://mariadb.com/kb/en/upgrading-from-mysql-to-mariadb/) for more information.
- Consequently, `cqrlog` and `amorok` now use `mariadb` instead of `mysql57` for their embedded databases. Running `mysql_upgrade` may be neccesary.
- The `xplr` package has been updated from 0.18.0 to 0.19.0, which brings some breaking changes. See the [upstream release notes](https://github.com/sayanarijit/xplr/releases/tag/v0.19.0) for more details.
-`github-runner` gained support for ephemeral runners and registrations using a personal access token (PAT) instead of a registration token. See `services.github-runner.ephemeral` and `services.github-runner.tokenFile` for details.
- ZFS module will not allow hibernation by default, this is a safety measure to prevent data loss cases like the ones described at [OpenZFS/260](https://github.com/openzfs/zfs/issues/260) and [OpenZFS/12842](https://github.com/openzfs/zfs/issues/12842). Use the `boot.zfs.allowHibernation` option to configure this behaviour.
- Neo4j was updated from version 3 to version 4. See this [migration guide](https://neo4j.com/docs/upgrade-migration-guide/current/) on how to migrate your Neo4j instance.
- The option `overrideStrategy` was added to the different systemd unit options (`systemd.services.<name>`, `systemd.sockets.<name>`, …) to allow enforcing the creation of a dropin file, rather than the main unit file, by setting it to `asDropin`.
This is useful in cases where the existence of the main unit file is not known to Nix at evaluation time, for example when the main unit file is provided by adding a package to `systemd.packages`.
See the fix proposed in [NixOS's systemd abstraction doesn't work with systemd template units](https://github.com/NixOS/nixpkgs/issues/135557#issuecomment-1295392470) for an example.
- The `bloat` package has been updated from unstable-2022-03-31 to unstable-2022-10-25, which brings a breaking change. See [this upstream commit message](https://git.freesoftwareextremist.com/bloat/commit/?id=887ed241d64ba5db3fd3d87194fb5595e5ad7d73) for details.
- The `services.grafana.provision.datasources` and `services.grafana.provision.dashboards` options were converted to a [RFC 0042](https://github.com/NixOS/rfcs/blob/master/rfcs/0042-config-option.md) configuration. They also now support specifying the provisioning YAML file with `path` option.
- The `services.grafana.provision.alerting` option was added. It includes suboptions for every alerting-related objects (with the exception of `notifiers`), which means it's now possible to configure modern Grafana alerting declaratively.
- Matrix Synapse now requires entries in the `state_group_edges` table to be unique, in order to prevent accidentally introducing duplicate information (for example, because a database backup was restored multiple times). If your Synapse database already has duplicate rows in this table, this could fail with an error and require manual remediation.
- The `diamond` package has been update from 0.8.36 to 2.0.15. See the [upstream release notes](https://github.com/bbuchfink/diamond/releases) for more details.
- memtest86+ was updated from 5.00-coreboot-002 to 6.00-beta2. It is now the upstream version from https://www.memtest.org/, as coreboot's fork is no longer available.
- Option descriptions, examples, and defaults writting in DocBook are now deprecated. Using CommonMark is preferred and will become the default in a future release.
- The `documentation.nixos.options.allowDocBook` option was added to ease the transition to CommonMark option documentation. Setting this option to `false` causes an error for every option included in the manual that uses DocBook documentation; it defaults to `true` to preserve the previous behavior and will be removed once the transition to CommonMark is complete.
- The udisks2 service, available at `services.udisks2.enable`, is now disabled by default. It will automatically be enabled through services and desktop environments as needed.
This also means that polkit will now actually be disabled by default. The default for `security.polkit.enable` was already flipped in the previous release, but udisks2 being enabled by default re-enabled it.
- Nextcloud has been updated to version **25**. Additionally the following things have changed
for Nextcloud in NixOS:
- For Nextcloud **>=24**, the default PHP version is 8.1.
- Nextcloud **23** has been removed since it will reach its [end of life in December 2022](https://github.com/nextcloud/server/wiki/Maintenance-and-Release-Schedule/d76576a12a626d53305d480a6065b57cab705d3d).
- For `system.stateVersion` being **>=22.11**, Nextcloud 25 will be installed by default. For older versions,
Nextcloud 24 will be installed.
- Please ensure that you only upgrade on major release at a time! Nextcloud doesn't support
upgrades across multiple versions, i.e. an upgrade from **23** to **25** is only possible
- The `pass-secret-service` package now includes systemd units from upstream, so adding it to the NixOS `services.dbus.packages` option will make it start automatically as a systemd user service when an application tries to talk to the libsecret D-Bus API.
- The default package for `services.mullvad-vpn.package` was changed to `pkgs.mullvad`, allowing cross-platform usage of Mullvad. `pkgs.mullvad` only contains the Mullvad CLI tool, so users who rely on the Mullvad GUI will want to change it back to `pkgs.mullvad-vpn`, or add `pkgs.mullvad-vpn` to their environment.
- PowerDNS has been updated from `4.6.x` to `4.7.x`. Please be sure to review the [Upgrade Notes](https://doc.powerdns.com/authoritative/upgrading.html#to-4-7-0-or-master) provided by upstream before upgrading. Worth specifically noting is that the new Catalog Zones feature comes with a mandatory schema change for the gsql database backends, which has to be manually applied.
- There is a new module for the `thunar` program (the Xfce file manager), which depends on the `xfconf` dbus service, and also has a dbus service and a systemd unit. The option `services.xserver.desktopManager.xfce.thunarPlugins` has been renamed to `programs.thunar.plugins`, and in a future release it may be removed.
- The `nodePackages` package set now defaults to the LTS release in the `nodejs` package again, instead of being pinned to `nodejs-14_x`. Several updates to node2nix have been made for compatibility with newer Node.js and npm versions and a new `postRebuild` hook has been added for packages to perform extra build steps before the npm install step prunes dev dependencies.
- boot.kernel.sysctl is defined as a freeformType and adds a custom merge option for "net.core.rmem_max" (taking the highest value defined to avoid conflicts between 2 services trying to set that value)
