doc/rl-2505: move unrelated entries from lib section

  2.0](https://github.com/containerd/containerd/blob/main/docs/containerd-2.0.md) documentation for more

  details.

- The `tinycc` package now has the `dev`, `doc` and `lib` outputs, thus,

`tinycc.out` may now only provide the tcc and cross compilers binaries.

- The `testTarget` argument of `haskellPackages.mkDerivation` has been deprecated in favour of `testTargets`.

  `testTarget` took a space separated string of targets, whereas the new `testTargets` argument takes a list of targets.

  For instance, `testTarget = "foo bar baz"` should become `testTargets = [ "foo" "bar" "baz" ]`.

- `rustPlatform.buildRustPackage` stops handling the deprecated argument `cargoSha256`. Out-of-tree packages that haven't migrated from `cargoSha256` to `cargoHash` now receive errors.

- `nodePackages.stackdriver-statsd-backend` has been removed, as the StackDriver service has been discontinued by Google, and therefore the package no longer works.

- `python3Packages.opentracing` has been removed due to being unmaintained upstream. [OpenTelemetry](https://opentelemetry.io/) is the recommended replacement.

  - `i18n.supportedLocales` will now trigger a warning when it omits any locale set in `i18n.defaultLocale`, `i18n.extraLocales` or `i18n.extraLocaleSettings`.

  - The options `i18n.defaultCharset` & `i18n.localeCharsets` were added, and they complement `i18n.defaultLocale` & `i18n.extraLocaleSettings` respectively - allowing to control the character set used per locale setting.

- Plasma 5 and Qt 5 based versions of associated software are deprecated in NixOS 25.05, and will be removed in NixOS 25.11. Users are encouraged to upgrade to Plasma 6.

- `titaniumenv`, `titanium`, and `titanium-alloy` have been removed due to lack of maintenance in Nixpkgs []{#sec-nixpkgs-release-25.05-incompatibilities-titanium-removed}.

- `octave` (and `octaveFull`) was updated to version `10.x`. The update broke a few `octavePackages`, and `librsb`. See [the PR's commits](https://github.com/NixOS/nixpkgs/pull/394495/commits) for more details.

  Note that all provided plugins must have versions/tags (string after `@`), even if upstream repo does not tag each release. For untagged plugins, you can either create an empty Go project and run `go get <plugin>` and see changes in `go.mod` to get the pseudo-version number, or provide a commit hash in place of version/tag for the first run, and update the plugin string based on the error output.

- The `godot-export-templates` package now has its content at `share/godot/export_templates/$version` instead of the output root. This makes it more convenient for for symlinking into `~/.local`, but scripts expecting the old layout will need to be changed.

- GOverlay has been updated to 1.2, please check the [upstream changelog](https://github.com/benjamimgois/goverlay/releases) for more details.

  - [`lib.types.enum`](https://nixos.org/manual/nixos/unstable/#sec-option-types-basic): Previously the `functor.payload` was the list of enum values directly. Now it is an attribute set containing the values in the `values` attribute.

  - [`lib.types.separatedString`](https://nixos.org/manual/nixos/unstable/#sec-option-types-string): Previously the `functor.payload` was the separator directly. Now it is an attribute set containing the separator in the `sep` attribute.

- The `tinycc` package now has the `dev`, `doc` and `lib` outputs, thus,

`tinycc.out` may now only provide the tcc and cross compilers binaries.

- The `virtualisation.hypervGuest.videoMode` option has been removed. Standard tooling can now be used to configure display modes for Hyper-V VMs.

- [`lib.packagesFromDirectoryRecursive`](https://nixos.org/manual/nixpkgs/unstable/#function-library-lib.filesystem.packagesFromDirectoryRecursive) now rejects unknown arguments.

- The `godot-export-templates` package now has its content at `share/godot/export_templates/$version` instead of the output root. This makes it more convenient for for symlinking into `~/.local`, but scripts expecting the old layout will need to be changed.

### Deprecations {#sec-nixpkgs-release-25.05-lib-deprecations}

- `functor` is an implementation detail and should not be relied upon, but since its status wasn't clear and it has had some use cases without alternatives, changes are being handled as gracefully as possible. Deprecations within functor:

    - `lib.types.coercedTo`

    - `lib.types.either`

- The `testTarget` argument of `haskellPackages.mkDerivation` has been deprecated in favour of `testTargets`.

  `testTarget` took a space separated string of targets, whereas the new `testTargets` argument takes a list of targets.

  For instance, `testTarget = "foo bar baz"` should become `testTargets = [ "foo" "bar" "baz" ]`.

- Plasma 5 and Qt 5 based versions of associated software are deprecated in NixOS 25.05, and will be removed in NixOS 25.11. Users are encouraged to upgrade to Plasma 6.

- `rustPlatform.buildRustPackage` stops handling the deprecated argument `cargoSha256`. Out-of-tree packages that haven't migrated from `cargoSha256` to `cargoHash` now receive errors.

### Additions and Improvements {#sec-nixpkgs-release-25.05-lib-additions-improvements}

- [`lib.packagesFromDirectoryRecursive`](https://nixos.org/manual/nixpkgs/unstable/#function-library-lib.filesystem.packagesFromDirectoryRecursive) can now construct nested scopes matching the directory tree passed as input.

  option following this [guide](https://doc.powerdns.com/recursor/appendices/yamlconversion.html).

  Note that options other than `services.pdns-recursor.settings` are unaffacted by this change.

- The `virtualisation.hypervGuest.videoMode` option has been removed. Standard tooling can now be used to configure display modes for Hyper-V VMs.

- Nextcloud's default FPM pool settings have been increased according to upstream recommentations. It's advised

  to review the new defaults and description of

  [](#opt-services.nextcloud.poolSettings).