# Release 26.11 ("Zokor", 2026.11/??) {#sec-release-26.11}

## Highlights {#sec-release-26.11-highlights}

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- The default PostgreSQL version for new NixOS installations (i.e. with `system.stateVersion >= 26.11`) is v18.

- The {file}`nixexprs.tar.xz` tarball will be discontinued together with Nixpkgs
  27.05 after 2027-12-31. Migrate to the {file}`nixexprs.tar.zst` tarball
  instead.

  This affects for example users who pull Nixpkgs as a flake input from
  https://channels.nixos.org:

  ```diff
  -nixpkgs.url = "https://channels.nixos.org/nixos-26.05/nixexprs.tar.xz";
  +nixpkgs.url = "https://channels.nixos.org/nixos-26.05/nixexprs.tar.zst";
  ```

- `sing-box` now supports NaïveProxy outbounds.

## New Modules {#sec-release-26.11-new-modules}

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- [Portmaster](https://safing.io/portmaster/), a privacy-focused application
  firewall, is available through
  [services.portmaster](#opt-services.portmaster.enable).

- [btrfs-heatmap](https://github.com/knorrie/btrfs-heatmap), setcap wrapper for `btrfs-heatmap` package, a visualizer of how a btrfs filesystem is using the underlying disk space of the block devices. Available as [programs.btrfs-heatmap](#opt-programs.btrfs-heatmap.enable)

- [compsize](https://github.com/kilobyte/compsize), setcap wrapper for `compsize` package, a cli utility to to inspect compression type/ratio on BTRFS filesystems. Available as [programs.compsize](#opt-programs.compsize.enable)

- [tranquil](https://tangled.org/tranquil.farm/tranquil-pds) is an ATProto PDS (personal data server) implementation in Rust. A featureful, spec conscious and community driven alternative to the Bluesky reference implementation PDS. Available as [services.tranquil-pds](#opt-services.tranquil-pds.enable).

- [Cardwire](https://github.com/OpenGamingCollective/cardwire), a GPU manager for Linux that uses eBPF+LSM hooks to control GPUs. Available as [services.cardwired](#opt-services.cardwired.enable).

- [Moonlight Qt](https://moonlight-stream.org/), a client for playing your PC games on almost any device. Available as [programs.moonlight-qt](#opt-programs.moonlight-qt.enable).

- [RomM](https://romm.app/), a self-hosted ROM manager and player. Available as [services.romm](#opt-services.romm.enable).

- [scx_loader](https://github.com/sched-ext/scx-loader), a system daemon and DBus-based loader for sched_ext schedulers. `scxctl` is the command-line client for interacting with the loader, allowing users to switch schedulers, modes, and arguments dynamically. Available as [services.scx-loader](#opt-services.scx-loader.enable)

- [tap](https://github.com/bluesky-social/indigo/tree/main/cmd/tap), an ATProtocol firehose synchronisation utility. Available as [services.tap](#opt-services.tap.enable).

- [Nezha](https://github.com/nezhahq/nezha), a self-hosted, lightweight server and website monitoring and O&M tool. Available as [services.nezha](#opt-services.nezha.enable).

- [Noctalia](https://noctalia.dev), a sleek and customizable desktop shell crafted for Wayland. Available as [programs.noctalia](#opt-programs.noctalia.enable).

- [Watt](https://github.com/NotAShelf/watt), a CPU frequency and power management daemon for Linux. Available as [services.watt](#opt-services.watt.enable).

- [mail-tlsa-check-exporter](https://github.com/ietf-tools/mail-tlsa-check-exporter), validates SMTP / IMAP server certificates against a TLSA record as a Prometheus exporter. Available as [services.prometheus.exporters.mail-tlsa-check](#opt-services.prometheus.exporters.mail-tlsa-check.enable).

- [feishin](https://github.com/jeffvli/feishin), a modern self-hosted music player. Available as [services.feishin](#opt-services.feishin.enable).

- [CastSponsorSkip](https://github.com/gabe565/CastSponsorSkip/), skips YouTube sponsorships (and sometimes ads) on all local Google Cast devices.

- [Stump](https://www.stumpapp.dev/), a free and open source comics, manga and digital book server with OPDS support. Available as [services.stump](#opt-services.stump.enable).

- [P2Pool](https://github.com/SChernykh/p2pool), a decentralized mining pool for Monero. Available as [services.p2pool](#opt-services.p2pool.enable).

- [Freescout](https://freescout.net/), a free, open source Helpdesk and shared mailbox. Available as [services.freescout](#opt-services.freescout.enable).

- [Lix TOML remote builders](https://docs.lix.systems/manual/lix/stable/advanced-topics/distributed-builds.html#using-a-toml-configuration), remote builder configuration using lix's TOML format. Available as [lix.buildMachines](#opt-lix.buildMachines). Note: incompatible with `nix.buildMachines`.

- [Forgejo Runner](https://forgejo.org/docs/latest/admin/actions/), a daemon for Forgejo Actions. Available as [services.forgejo-runner](#opt-services.forgejo-runner.instances).

- [Koito](https://koito.io/), a modern, themeable scrobbler that you can use with any program that scrobbles to a custom ListenBrainz URL. Available as [services.koito](#opt-services.koito.enable).

- [Zapret2](https://github.com/bol-van/zapret2), an extensible DPI bypass program. Available as [services.zapret2](#opt-services.zapret2.enable).

- [Solaar](https://github.com/pwr-Solaar/Solaar), a program to control logitech devices.

- [FlapAlerted](https://github.com/Kioubit/FlapAlerted), detects BGP flapping events and provides statistics based on BGP update messages. Available as [services.flap-alerted](#opt-services.flap-alerted.enable).

- [gocron](https://github.com/flohoss/gocron), a task scheduler with web interface. Available as [services.gocron](#opt-services.gocron.enable).

- [Unpackerr](https://unpackerr.zip), extracts downloads for Radarr, Sonarr, Lidarr, Readarr, and/or a Watch folder. Available as [services.unpackerr](#opt-services.unpackerr.enable).

- [ioquake3](https://ioquake3.org), a open-source port of the 3D action shooter Quake 3 Arena. Available as [programs.ioquake3](#opt-programs.ioquake3.enable).

- [Matrix Authentication Service](https://github.com/element-hq/matrix-authentication-service) is an OAuth2.0 and OpenID Connect provider for Matrix homeservers (such as Synapse). It replaces standard password authentication with modern OpenID Connect flows, and can delegate authentication to upstream OIDC providers. Available as [services.matrix-authentication-service](#opt-services.matrix-authentication-service.enable).

- [Krill](https://nlnetlabs.nl/projects/krill/about), RPKI CA and Publication Server written in Rust. Available as [services.krill](#opt-services.krill.enable).

- [stash-clipboard](https://github.com/NotAShelf/stash), a Wayland clipboard "manager" with fast persistent history and multi-media support. Available as [services.stash-clipboard](#opt-services.stash-clipboard.enable).

- [OO7](https://github.com/linux-credentials/oo7) is a desktop-agnostic Secret Service provider. Available as [services.oo7](#opt-services.oo7.enable)

- [NordVPN](https://github.com/NordSecurity/nordvpn-linux), a NordVPN client for linux. Available as [services.nordvpn](options.html#opt-services.nordvpn.enable).

- [RNSD](https://reticulum.network/), the Reticulum Network Stack Daemon. It provides a secure and efficient way to communicate over the Reticulum Network. Available as [services.rnsd](#opt-services.rnsd.enable).

- [LXMD](https://github.com/markqvist/LXMF), a universal, distributed and secure messaging protocol for Reticulum. Available as [services.lxmd](#opt-services.lxmd.enable).

- [Entropy](https://github.com/ergohaven/entropy), a configurator for programmable keyboards and input devices running Vial-QMK/RMK firmware. Available as [programs.entropy](#opt-programs.entropy.enable).

- [Kvrocks](https://kvrocks.apache.org/), a distributed key value NoSQL database compatible with the Redis protocol. Available as [services.kvrocks](#opt-services.kvrocks.enable).

- [kvrocks_exporter](https://github.com/RocksLabs/kvrocks_exporter), a Prometheus exporter for Kvrocks metrics. Available as [services.prometheus.exporters.kvrocks](#opt-services.prometheus.exporters.kvrocks.enable).

## Backward Incompatibilities {#sec-release-26.11-incompatibilities}

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- Artalk has been updated to 2.10.0. Its default configuration and data
  directory discovery changed; see the [upstream migration
  guide](https://artalk.js.org/en/guide/releases/v2.10.0.html) when invoking
  `artalk` directly. The `services.artalk` module is unaffected.

- `boot.vesa` has been removed. It was deprecated in 2020 because Xorg now works better with kernel modesetting. If you still need the legacy VESA 800x600 fallback, set `boot.kernelParams = [ "vga=0x317" "nomodeset" ];` directly.

- `authentik` has been updated to 2026.5.3, which changes the default listen address from `0.0.0.0` to `[::]`.
  IPv4-only deployments might need to adjust their listen settings.
  Deployments running the server and worker in the same network namespace must also set at least the worker
  `AUTHENTIK_LISTEN__HTTP` address so that the server and worker do not bind to the same address.

- `services.paperless` has been updated to paperless-ngx 3.0, a major release; review the [upstream v3 migration guide](https://docs.paperless-ngx.com/migration-v3/) before upgrading.
  - paperless-ngx 3 requires a non-default `PAPERLESS_SECRET_KEY`. The module now generates one automatically, reusing the key from earlier NixOS releases so existing sessions keep working; a key set via `environmentFile` still takes precedence.
  - The full-text search backend changed from Whoosh to Tantivy. The search index is rebuilt automatically on the first start after upgrading, which can take a while for large document sets.
  - Some settings changed or were removed (for example, an external database now needs an explicit `PAPERLESS_DBENGINE`); review your `services.paperless.settings` against the migration guide.

- `services.alps` has been rewritten, see [upstream repository](https://github.com/migadu/alps) for configuration.

- Nginx no longer includes the unmaintained dav module per default.
  If you happened to use it via a `dav_*` directive, you can include it with `services.nginx.additionalModules = [ pkgs.nginxModules.dav ]` again.

- Support for the legacy U‐Boot image format has been removed from the initrd generators, as it is deprecated upstream and no longer used by any platform in Nixpkgs.

- `services.pid-fan-controller` no longer provides deep configuration rewriting and adheres now fully to RFC42.

- The `extraArgs` and `check` arguments to `nixos/lib/eval-config.nix` (and therefore to `lib.nixosSystem`) have been removed after being deprecated with a warning since 2021. Passing them is now an evaluation error. Instead of `extraArgs`, set `config._module.args`; instead of `check = false`, set `config._module.check = false`. The `extraArgs` attribute on the resulting configuration has been removed as well.

- Rustical migrates from `settings.http.host` and `settings.http.port` to `settings.http.bind` to support UNIX domain sockets as well as TCP sockets in one setting.

- The `jetty_11` package has been removed as it reached end of life. Use `jetty_12` instead.

- The Mullvad VPN service now has a separate toggle to enable the Mullvad VPN graphical user interface. If you have previously used Mullvad on a desktop by setting `services.mullvad-vpn.package` to `pkgs.mullvad-vpn`, you should now **unset that option**, and enable `services.mullvad-vpn.gui.enable`. The VPN will not work if `services.mullvad-vpn.package` is set to `pkgs.mullvad-vpn`, as `pkgs.mullvad-vpn` no longer contains the Mullvad Daemon; please ensure that `services.mullvad-vpn.package` is set to `pkgs.mullvad`, regardless if you plan to enable the graphical user interface or not.

- A number of options for `services.llama-cpp` have been removed in favor of the structured [](#opt-services.llama-cpp.settings) option, attributes from which are used as arguments to `llama-server` executable, you can see all available options by running `llama-server --help`. Configuring model presets using Nix attribute set via `services.llama-cpp.modelsPreset` is no longer supported, please use `services.llama-cpp.settings.models-preset` with a path to an INI file containing desired options.

- The `NIX_XDG_DESKTOP_PORTAL_DIR` environment variable is no longer used in the `xdg-desktop-portal` package and is therefore no longer set in `xdg.portal` module.
  Instead the `XDG_DATA_DIRS` environment variable is used to find xdg-portals.

  If you were relying on `NIX_XDG_DESKTOP_PORTAL_DIR` to point at custom portal
  definitions, add the package providing them to `xdg.portal.extraPortals`.

- Python 2 has been removed from the top-level package set, as it is long past end-of-life. The `python2`, `python27`, `python2Full`, `python27Full`, `python2Packages`, and `python27Packages` attributes, along with the legacy `python`, `pythonFull`, and `pythonPackages` aliases, now throw an error directing you to `python3`. The `isPy2` and `isPy27` package flags have been removed accordingly. The only remaining Python 2 interpreter is vendored inside the `resholve` package for its `oil` dependency and is not exposed for general use.

- `security.polkit.enablePkexecWrapper` has been introduced, making the `pkexec` setuid wrapper opt-in.

- Apache Kafka has dropped support for ZooKeeper mode. The `apacheKafka_3_9` and `apacheKafka_4_0` packages have been removed, as every remaining packaged version is KRaft-only. The `services.apache-kafka.zookeeper` option (previously an alias for `services.apache-kafka.settings."zookeeper.connect"`) has been removed; migrate your cluster to [KRaft](#module-services-apache-kafka-kraft) mode instead.

- `virtualisation.containers.registries.block` / `insecure` / `search` were deprecated,
  because they mapped to the deprecated V1 `registries.conf` format.
  See the new option {option}`virtualisation.containers.registries.settings`
  and [containers-registries.conf(5)](https://github.com/containers/image/blob/main/docs/containers-registries.conf.5.md)
  to migrate to the new configuration format.

- When Avahi's mDNS resolver is enabled (`services.avahi.nssmdns4` or `services.avahi.nssmdns6`), only the minimal mDNS resolver is enabled by default to avoid adding a 5 second delay to every failed reverse hostname lookup (e.g., delaying ping by 5 seconds). The "full" mDNS resolver now remains disabled unless `services.avahi.nssmdnsFull` is also enabled. Users who have customized [`/etc/mdns.allow`](https://github.com/avahi/nss-mdns/tree/master#etcmdnsallow) to allow mDNS domains not ending `.local` must enable `services.avahi.nssmdnsFull` to continue to resolve such domains.

- String values passed to `services.phpfpm.settings`, `services.phpfpm.pools.<name>.phpEnv`, and `services.phpfpm.pools.<name>.settings` are now properly quoted and escaped, except for the `${}` syntax that is left as-is. If you are manually escaping these values, please adjust accordingly.

- GitLab has been updated from 18.x to 19.x and requires PostgreSQL >= 17, as stated in the [documentation](https://docs.gitlab.com/19.1/install/requirements/#postgresql). Check the [upgrade guide](#module-services-postgres-upgrading) in the NixOS manual on how to upgrade your PostgreSQL installation.

- `services.gitlab.registry` has been modified so that the GitLab container registry runs in the `gitlab-container-registry` system user. This behavior can be modified with the `services.gitlab.registry.user` option.

- `fail2ban` has been updated to 1.1.1, which has a few breaking changes compared to 1.1.0 ([changelog](https://github.com/fail2ban/fail2ban/blob/1.1.1/ChangeLog))

- `systemd.user.extraConfig` has been removed in favor of the structured [](#opt-systemd.user.settings.Manager) option. Use `systemd.user.settings.Manager` to set any `systemd-user.conf(5)` option directly. For example, replace `systemd.user.extraConfig = "DefaultTimeoutStartSec=60";` with `systemd.user.settings.Manager.DefaultTimeoutStartSec = 60;`.

- `matrix-appservice-discord` was removed from nixpkgs along with its NixOS module (`services.matrix-appservice-discord`) as it is no longer actively maintained upstream. Use the actively-maintained puppeting bridge [`mautrix-discord`](#opt-services.mautrix-discord.enable) instead.

- Home Assistant 2026.8.0 migrated its HTTP configuration from YAML into the frontend. After upgrading, any options configured under `services.home-assistant.config.http` can be removed. HTTP settings can now be configured from the Home Assistant frontend under [Settings → System → Network](https://my.home-assistant.io/redirect/network). If no HTTP settings were previously configured, Home Assistant will default to listening on all interfaces on port 8123.

- `services.timesyncd.extraConfig` has been removed in favor of the structured [](#opt-services.timesyncd.settings.Time) option. Use `services.timesyncd.settings.Time` to set any `timesyncd.conf(5)` option directly. For example, replace `services.timesyncd.extraConfig = "PollIntervalMaxSec=180";` with `services.timesyncd.settings.Time.PollIntervalMaxSec = 180;`.

- `services.firezone.server.provision` has been removed due to it being unmaintanable. Remove all uses of provisioning and use the WebUI to configure firezone.

- The `services.syncthing` module now updates the Syncthing REST API using partial updates (`PATCH`) instead of full replacements (`PUT`) for general settings. Updating these settings was broken and prone to errors after updates, see [#428808](https://github.com/NixOS/nixpkgs/issues/428808) and [#528889](https://github.com/NixOS/nixpkgs/issues/528889). As a result, settings modified manually through the Syncthing Web UI that are not explicitly defined in your Nix configuration will now persist across rebuilds.

- `services.plantuml-server.packages.jetty` now supports `jetty_12`, it no longer supports `jetty_11`.

- `services.komodo-periphery` has been updated to support version 2.0.0. Some options have been renamed to match the new configuration structure; compatibility aliases are provided for the renamed options. The `passkeys` and `outbound.onboardingKey` options have been removed; use `passkeyFiles`, `auth.privateKey`/`auth.corePublicKeys`, or `outbound.onboardingKeyFile` instead. New outbound mode configuration is available under `outbound.*`.

- Package `overseerr` has been removed as the `overseerr` and `jellyseerr` projects were merged under `seerr`.

- `slskd` has been updated to v0.25.0, which renames the `global` option to `transfers`. Please review the [changelog](https://github.com/slskd/slskd/releases#release-0.25.0).

- [firefox-syncserver.database.type](#opt-services.firefox-syncserver.database.type) no longer defaults to `"mysql"`. You must now explicitly choose between `"mysql"` and `"postgresql"`. New deployments should prefer PostgreSQL.

## Other Notable Changes {#sec-release-26.11-notable-changes}

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- `programs.regreet` has been renamed to `services.displayManager.regreet`.

- `komodo` has been updated to the v2 release line (2.x). See the [upstream v1 → v2 upgrade guide](https://github.com/moghtech/komodo/releases/tag/v2.0.0).

- `temporal` has been updated to the 1.31 release line. Always consult the [upstream upgrade
  notes](https://docs.temporal.io/self-hosted-guide/upgrade-server) before upgrading between versions.

- The Xen Project Hypervisor has been [updated to version 4.22](https://wiki.xenproject.org/wiki/Xen_Project_4.22_Release_Notes), after [version 4.21](https://wiki.xenproject.org/wiki/Xen_Project_4.21_Release_Notes) was skipped in 26.05. The module now has a separate option to customise the OCaml-based Xen Store Daemon package, `virtualisation.xen.store.package`.

- The `shell_interact()` function on interactive runs of NixOS VM tests has been deprecated. Use the SSH backdoor instead.

- NixOS VM tests now prefer to express durations and timeouts as `datetime.timedelta` values instead of bare numbers. Methods such as `machine.wait_until_succeeds`, `machine.sleep`, `retry`, and `polling_condition` now accept a `timedelta` (e.g., `machine.wait_for_unit("sshd.service", timeout=datetime.timedelta(minutes=1))`). Passing an `int`/`float` as seconds still works but now emits a deprecation warning. Argument names that explicitly defined units were preserved but have had `timedelta` equivalents introduced (`timeout_seconds` → `timeout`, `secs` → `duration`, `seconds_interval` → `interval`).

- `darwin.linux-builder-vz` has been added: a variant of `darwin.linux-builder` that runs the builder guest on Apple's Virtualization.framework via the new `vzvm` package, translating `x86_64-linux` builds with Rosetta instead of emulating them. Apple silicon hosts only. As part of this, the `nixos/modules/profiles/nix-builder-vm.nix` profile has been split into the backend-neutral `nixos/modules/profiles/nix-builder.nix` and a QEMU-specific part. Existing imports of `nix-builder-vm.nix` keep working unchanged.

- [services.netbox](#opt-services.netbox.enable) has received a number of updates:
  - Default settings can now be introspected at [](#opt-services.netbox.settings).
  - Environment files can now be passed at [](#opt-services.netbox.environmentFiles).
  - When Django [secret key](#opt-services.netbox.secretKeyFile) or [API token peppers](#opt-services.netbox.apiTokenPepperFiles)
    remain unset, random values will automatically be generated and stored below `/var/lib/netbox`.
  - Multiple peppers can now be maintained, which allows for pepper rotation.
  - All options to bind the gunicorn socket have been unified in [](#opt-services.netbox.bind)
    and the default changed to a UNIX domain socket.
  - A cookie-cutter nginx vhost can be enabled at [](#opt-services.netbox.nginx.enable).

- The [monero](#opt-services.monero.enable) systemd service has been security hardened.

- `security.run0.enableSudoAlias` now uses the `run0-sudo-shim` instead of a shell-script to improve compatibility.

- With `system.etc.overlay.mutable = false`, NixOS now ships an empty `/etc/machine-id` in the image. Previously the file was absent and systemd logged `System cannot boot: Missing /etc/machine-id and /etc/ is read-only` while `ConditionFirstBoot` fired on every boot. With this change, systemd now overlays a transient ID from `/run/machine-id` for the session, and `systemd-machine-id-commit.service` has `ConditionFirstBoot` so it writes the machine-id through to a persistent backing file when one is bind-mounted over `/etc/machine-id`. To persist the machine-id across reboots, bind-mount a writable file containing `uninitialized` over `/etc/machine-id` from the initrd, or set `systemd.machine_id=` on the kernel command line (use `systemd.machine_id=firmware` to derive a stable ID on hardware that supports it).

- `security.run0.persistentAuth` options have been added to support persistent Authentication of session. Timeout configurable via `security.polkit.settings.Polkitd.ExpirationSeconds`.

- [`virtualisation.qemu.firmware.enable`](#opt-virtualisation.qemu.firmware.enable) has been added to install QEMU firmware descriptors to {file}`/etc/qemu/firmware`, making the corresponding firmware images discoverable by tools such as `systemd-vmspawn`. By default this exposes the firmware bundled with QEMU. Further firmware can be added via [`virtualisation.qemu.firmware.packages`](#opt-virtualisation.qemu.firmware.packages), for example the new `OVMF-amdsev` and `OVMF-inteltdx` packages, which provide UEFI firmware for AMD SEV-SNP and Intel TDX confidential VMs.

- `boot.loader.systemd-boot` gained support for [Automatic Boot Assessment](https://systemd.io/AUTOMATIC_BOOT_ASSESSMENT/) via the new [`boot.loader.systemd-boot.bootCounting`](#opt-boot.loader.systemd-boot.bootCounting.enable) options, allowing automatic detection of and recovery from bad NixOS generations. As part of this change, boot loader entries on the ESP/XBOOTLDR partition are now named `nixos-<content-hash>.conf` instead of `nixos-generation-<n>.conf`; existing entries are migrated automatically on the next `nixos-rebuild boot`/`switch`.

- `services.nginx` gained a [`lua`](#opt-services.nginx.lua.enable) option to enable Lua scripting via OpenResty's lua-nginx-module on a stock nginx, configuring `lua_package_path`/`lua_package_cpath` from the packages listed in [`services.nginx.lua.extraPackages`](#opt-services.nginx.lua.extraPackages). Use this to add Lua to a regular nginx; for the full OpenResty platform (libraries that rely on its bundled lualib, such as `lua-resty-openidc`), set `services.nginx.package` to `pkgs.openresty` instead — the option configures the Lua search path for it too.

- `security.polkit.settings` added for RFC42 style configuration of the polkitd daemon.

- `boot.supportedFilesystems.ntfs` installs `ntfsprogs-plus` instead of `ntfs3g` on kernel version 7.1 and later, unless `boot.supportedFilesystems.ntfs-3g` is explicitly enabled.

- `services.i2pd` has been refactored to take [RFC42](https://github.com/NixOS/rfcs/blob/master/rfcs/0042-config-option.md)-compliant `settings`. In order to migrate, you will need to move existing config under `settings` and rename them in accordance with the [upstream config format](https://docs.i2pd.website/en/latest/user-guide/configuration/#available-options). In addition, `inTunnels` and `outTunnels` needs to be renamed to `serverTunnels` and `clientTunnels` respectively.

- The `programs.fuse` module, which provides the `fusermount3` executable and the `/etc/fuse.conf` config file, is now opt-in. The obligation to enable it has been shifted to its various consumers (e.g. gvfs, flatpak, appimage, sshfs). This can break fuse consumers at runtime, that don't explicitly declare that dependency with a module, e.g the mounting functionality in various backup tools (borg, restic, rclone, ...).

- `services.plausible` can now again seed an initial admin user declaratively via [`services.plausible.adminUser.email`](#opt-services.plausible.adminUser.email).
  This makes fully declarative deployments safer: Otherwise the user needed to either accept Plausible's unauthenticated "first launch" setup wizard, which lets anyone reaching the instance create the first admin account, or do more work (deploying with NixOS's default binding to `localhost` without exposing it publicly, going through the wizard, and then deploying Plausible exposed to the Internet).
  This option was previously removed with NixOS 25.05 due to an upstream Plausible change making declarative admin creation more difficult, but this change re-implements the admin creation directly.

- `services.gitlab.registry` now uses PostgreSQL as database storage for new installations and supports old installations that use the filesystem as metadata storage. It creates the required PostgreSQL database and user. Users can manually migrate their filesystem based metadata storage. See [GitLab Container Registry Migration to database metadata store](#module-services-gitlab-registry-database-migration).

- Enabling [`services.userborn`](#opt-services.userborn.enable) on a system that was previously managed by the default `update-users-groups.pl` script now imports the legacy state from `/var/lib/nixos/` on the first switch. Locked stub entries are added to `/etc/passwd` and `/etc/group` for every name recorded in `uid-map`/`gid-map` that no longer has a live entry, so a previously-used UID/GID cannot be reassigned to a different user. If the import fails, userborn does not start and the user database is left untouched. Inspect `journalctl -u userborn-import-legacy.service`, fix or remove the legacy state, and switch again. The import can be skipped entirely with [`services.userborn.importLegacyState`](#opt-services.userborn.importLegacyState)` = false`.

- The `newuidmap` and `newgidmap` security wrappers are now installed with `cap_setuid`/`cap_setgid` file capabilities instead of the setuid-root bit, matching shadow's `--with-fcaps` install mode and other major distributions. Rootless containers (podman, docker-rootless, unprivileged user namespaces) are unaffected. The only behavioural change is that mapping host uid 0 via `/etc/subuid` (which NixOS never configures by default) additionally requires `cap_setfcap`; users who explicitly grant uid 0 in a subuid range can restore the previous behaviour with `security.wrappers.newuidmap.capabilities = lib.mkForce "cap_setuid,cap_setfcap+ep";`.

- The `authelia` module now uses systemd's `LoadCredential` to load all files defined in `secrets`. As such, these files no longer need to be readable by the authelia user and group: they can for example be set to be only readable by the root user.

- `zoneminder` has been updated to 1.38.x release. See [upstream release note](https://github.com/ZoneMinder/zoneminder/releases/tag/1.38.0). While database migration should happen automatically, it's recommended that you make a backup of the database before upgrading your system.

- The latest available version of Nextcloud is v34 (available as `pkgs.nextcloud34`). The installation logic is as follows:
  - If [`services.nextcloud.package`](#opt-services.nextcloud.package) is specified explicitly, this package will be installed (**recommended**)
  - If `system.stateVersion` is >=26.11, `pkgs.nextcloud34` will be installed by default.
  - If [`system.stateVersion`](#opt-system.stateVersion) is >=26.05, `pkgs.nextcloud33` will be installed by default.
  - If [`system.stateVersion`](#opt-system.stateVersion) is >=25.11, `pkgs.nextcloud32` will be installed by default.
  - Please note that Nextcloud prohibits skipping major versions while upgrading. You can upgrade to specific versions by declaring `services.nextcloud.package = pkgs.nextcloud33;`.

- `trilium-desktop` and `trilium-server` have been updated to 0.104.0. This release includes security hardening fixes that may break functionality. [See upstream release note for details](https://github.com/TriliumNext/Trilium/releases/tag/v0.104.0).

- `nix` now supports running in "daemonless" mode by setting `nix.daemon.enable = false`. Under this mode all store operations must go through the [local store type](https://nix.dev/manual/nix/latest/store/types/local-store), which typically requires root permissions.

- [Hister](https://github.com/asciimoo/hister), a web history service offering blazing fast, content-based search across visited websites. Available as [services.hister](#opt-services.hister.enable).
