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5th chunk of `nixos/doc/manual/release-notes/rl-2511.section.md`
eb45a5bfdc72a32e437299de4dcfcc073c54686ff86e11610000000100001007
- The Perl implementation of the `switch-to-configuration` program is removed. All switchable systems now use the Rust rewrite. Any prior usage of `system.switch.enableNg` must now be removed. If you have any outstanding issues with the new implementation, please open an issue on GitHub.

- The `no-broken-symlink` build hook now also fails builds whose output derivation contains links to $TMPDIR (typically /build, which contains the build directory).

- The `services.polipo` module has been removed as `polipo` is unmaintained and archived upstream.

- `virtualisation.lxd` has been removed due to lack of Nixpkgs maintenance. Users can migrate to `virtualisation.incus`, a fork of LXD, as a replacement. See [Incus migration documentation](https://linuxcontainers.org/incus/docs/main/howto/server_migrate_lxd/) for migration information.

- The non-LTS Forgejo package (`forgejo`) has been updated to 12.0.0. This release contains breaking changes, see the [release blog post](https://forgejo.org/2025-07-release-v12-0/)
  for all the details and how to ensure smooth upgrades.

- `sing-box` has been updated to 1.12.3, which includes a number of breaking changes, old configurations may need updating or they will cause the tool to fail to run.
  See the [change log](https://sing-box.sagernet.org/changelog/#1123) for details and [migration](https://sing-box.sagernet.org/migration/#1120) for how to update old configurations.

- The Pocket ID module ([`services.pocket-id`][#opt-services.pocket-id.enable]) and package (`pocket-id`) has been updated to 1.0.0. Some environment variables have been changed or removed, see the [migration guide](https://pocket-id.org/docs/setup/migrate-to-v1/).

- `services.seafile` has been removed, as it is unmaintained and outdated.
  See [the manual](https://manual.seafile.com/13.0/upgrade/upgrade_notes_for_13.0.x/#important-release-changes)
  for details and next steps.

- The `zigbee2mqtt` package was updated to version 2.x, which contains breaking changes. See the [discussion](https://github.com/Koenkk/zigbee2mqtt/discussions/24198) for further information.

- []{#sec-release-25.11-incompatibilities-sourcehut-removed} The `services.sourcehut` module and corresponding `sourcehut` packages were removed due to being broken and unmaintained.
- The zookeeper project changed their logging tool to logback, therefore `services.zookeeper.logging` option has been updated to expect a logback compatible string.
- The `dovecot` systemd service was renamed from `dovecot2` to `dovecot`. The former is now just an alias. Update any overrides on the systemd unit to the new name.

- Configurations with `boot.initrd.systend.enable && !boot.initrd.enable` will have their `init` script at `$toplevel/init` instead of `$toplevel/prepare-root`. This is because it does not make sense for systemd stage 1 to affect the `init` script when stage 1 is entirely disabled (e.g. containers).

- `programs.goldwarden` has been removed, due to the software not working with newer versions of the Bitwarden and Vaultwarden servers, as well as it being abandoned upstream.

- `Prosody` has been updated to major release 13 which removed some obsoleted modules and brought a couple of major and breaking changes:
  - The `http_files` module is now disabled by default because it now requires `http_files_dir` to be configured.
  - The `vcard_muc` module has been removed and got replaced by the inbuilt `muc_vcard` module.
  - The `http_upload` module has been removed and you must migrate to the `http_file_share` module to stay XEP-0423 compliant. The `httpFileShare` options got expanded to better facility that.
  - The `admin_shell` module is now always being loaded to make `prosodyctl` functional.
  - The `mime_types_file` setting is now set to `"${pkgs.mailcap}/etc/mime.types"` to prevent errors.
  For a complete list of changes, please see [their announcement](https://blog.prosody.im/prosody-13.0.0-released/).

- The `yeahwm` package and `services.xserver.windowManager.yeahwm` module were removed due to the package being broken and unmaintained upstream.
Title: Software Removals, Renames, and Breaking Changes
Summary
This document outlines several backward incompatibilities and breaking changes in various software components and services. Key changes include the removal of the Perl `switch-to-configuration` program (now Rust-based), modifications to the `no-broken-symlink` build hook, and the deprecation and removal of `services.polipo`, `virtualisation.lxd` (with migration to `incus` recommended), `services.seafile`, `services.sourcehut`, `programs.goldwarden`, and `yeahwm` due to lack of maintenance or functionality issues. Several packages have received updates with breaking changes, including Forgejo (v12.0.0), sing-box (v1.12.3), Pocket ID (v1.0.0), zigbee2mqtt (v2.x), and Prosody (major release 13), all requiring configuration adjustments. Additionally, zookeeper's logging now expects a logback-compatible string, the `dovecot` systemd service has been renamed from `dovecot2` to `dovecot`, and certain `boot.initrd` configurations will result in a different `init` script path.