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19th chunk of `nixos/doc/manual/release-notes/rl-2305.section.md`
70b6f775e2eafda7990bc60ddc76227aeee75a84b89b1e440000000100000d2d
- Top-level `buildPlatform`, `hostPlatform`, `targetPlatform` have been deprecated, use `stdenv.X` instead.

- `carnix` and `cratesIO` has been removed due to being unmaintained, use alternatives such as [naersk](https://github.com/nix-community/naersk) and [crate2nix](https://github.com/kolloch/crate2nix) instead.

- `checkInputs` have been renamed to `nativeCheckInputs`, because they behave the same as `nativeBuildInputs` when `doCheck` is set. `checkInputs` now denote a new type of dependencies, added to `buildInputs` when `doCheck` is set. As a rule of thumb, `nativeCheckInputs` are tools on `$PATH` used during the tests, and `checkInputs` are libraries which are linked to executables built as part of the tests. Similarly, `installCheckInputs` are renamed to `nativeInstallCheckInputs`, corresponding to `nativeBuildInputs`, and `installCheckInputs` are a new type of dependencies added to `buildInputs` when `doInstallCheck` is set. (Note that this change will not cause breakage to derivations with `strictDeps` unset, which are most packages except python, rust, ocaml and go packages).

- DocBook option documentation, which has been deprecated since 22.11, will now cause a warning when documentation is built. Out-of-tree modules should migrate to using CommonMark documentation as outlined in [](#sec-option-declarations) to silence this warning.

  DocBook option documentation support will be removed in the next release and CommonMark will become the default. DocBook option documentation that has not been migrated until then will no longer render properly or cause errors.

- `lib.systems.examples.ghcjs` and consequently `pkgsCross.ghcjs` now use the target triplet `javascript-unknown-ghcjs` instead of `js-unknown-ghcjs`. This has been done to match an [upstream decision](https://gitlab.haskell.org/ghc/ghc/-/commit/6636b670233522f01d002c9b97827d00289dbf5c) to follow Cabal's platform naming more closely. Nixpkgs will also reject `js` as an architecture name.

- Lisp gained a [manual section](https://nixos.org/manual/nixpkgs/stable/#lisp), documenting a new and backwards incompatible interface. The previous interface will be removed in a future release.

- Calling `makeSetupHook` without passing a `name` argument is deprecated.

- `nixos/lib/make-disk-image.nix` handles `contents` arguments that are directories better, fixing a bug where it used to put them in a subdirectory of the intended `target`.

- `nixos/lib/make-disk-image.nix` can now mutate EFI variables, run user-provided EFI firmware or variable templates. This is now extensively documented in the NixOS manual.

- Nixpkgs now uses [IEEE-standard floating point arithmetic](https://github.com/NixOS/nixpkgs/pull/170215) on `powerpc64le-linux`.

- Deprecated `xlibsWrapper` transitional package has been removed in favour of direct use of its constituents: `xorg.libX11`, `freetype` and others.

## Detailed migration information {#sec-release-23.05-migration}

### Pipewire configuration overrides {#sec-release-23.05-migration-pipewire}

#### Why this change? {#sec-release-23.05-migration-pipewire-why}

The Pipewire config semantics don't really match the NixOS module semantics, so it's extremely awkward to override the default config, especially when lists are involved. Vendoring the configuration files in nixpkgs also creates unnecessary maintenance overhead.
Title: NixOS 23.05: Nixpkgs Internals, Documentation, and Migration Details
Summary
This section covers deprecations and removals, including `buildPlatform`, `carnix`, `cratesIO`, and the `xlibsWrapper` package. It details the renaming of `checkInputs` and `installCheckInputs` for clarity. DocBook option documentation is deprecated in favor of CommonMark. GHCJS target triplet is updated, and Lisp gains a new manual section with a new interface. Calling `makeSetupHook` without a `name` argument is deprecated. Improvements are made to `make-disk-image.nix` for handling directories and EFI variables. IEEE-standard floating-point arithmetic is now used on `powerpc64le-linux`. A detailed migration section focuses on Pipewire configuration overrides, explaining the reason for the change due to mismatched semantics and maintenance overhead.