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1
doc/manual/src/release-notes/rl-2.12.md
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@ -2,7 +2,6 @@
* On Linux, Nix can now run builds in a user namespace where they run
as root (UID 0) and have 65,536 UIDs available.
<!-- FIXME: move this to its own section about system features -->
This is primarily useful for running containers such as `systemd-nspawn`
inside a Nix build. For an example, see [`tests/systemd-nspawn/nix`][nspawn].

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doc/manual/src/release-notes/rl-2.18.md Normal file
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# Release 2.18 (2023-09-20)
- Two new builtin functions,
[`builtins.parseFlakeRef`](@docroot@/language/builtins.md#builtins-parseFlakeRef)
and
[`builtins.flakeRefToString`](@docroot@/language/builtins.md#builtins-flakeRefToString),
have been added.
These functions are useful for converting between flake references encoded as attribute sets and URLs.
- [`builtins.toJSON`](@docroot@/language/builtins.md#builtins-parseFlakeRef) now prints [--show-trace](@docroot@/command-ref/conf-file.html#conf-show-trace) items for the path in which it finds an evaluation error.
- Error messages regarding malformed input to [`nix derivation add`](@docroot@/command-ref/new-cli/nix3-derivation-add.md) are now clearer and more detailed.
- The `discard-references` feature has been stabilized.
This means that the
[unsafeDiscardReferences](@docroot@/contributing/experimental-features.md#xp-feature-discard-references)
attribute is no longer guarded by an experimental flag and can be used
freely.
- The JSON output for derived paths which are store paths is now a string, not an object with a single `path` field.
This only affects `nix-build --json` when "building" non-derivation things like fetched sources, which is a no-op.
- A new builtin [`outputOf`](@docroot@/language/builtins.md#builtins-outputOf) has been added.
It is part of the [`dynamic-derivations`](@docroot@/contributing/experimental-features.md#xp-feature-dynamic-derivations) experimental feature.
- Flake follow paths at depths greater than 2 are now handled correctly, preventing "follows a non-existent input" errors.
- [`nix-store --query`](@docroot@/command-ref/nix-store/query.md) gained a new type of query: `--valid-derivers`. It returns all `.drv` files in the local store that *can be* used to build the output passed in argument. This is in contrast to `--deriver`, which returns the single `.drv` file that *was actually* used to build the output passed in argument. In case the output was substituted from a binary cache, this `.drv` file may only exist on said binary cache and not locally.

25
doc/manual/src/release-notes/rl-next.md
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@ -1,26 +1,9 @@
# Release X.Y (202?-??-??)
- Two new builtin functions,
[`builtins.parseFlakeRef`](@docroot@/language/builtins.md#builtins-parseFlakeRef)
and
[`builtins.flakeRefToString`](@docroot@/language/builtins.md#builtins-flakeRefToString),
have been added.
These functions are useful for converting between flake references encoded as attribute sets and URLs.
- [URL flake references](@docroot@/command-ref/new-cli/nix3-flake.md#flake-references) now support [percent-encoded](https://datatracker.ietf.org/doc/html/rfc3986#section-2.1) characters.
- [`builtins.toJSON`](@docroot@/language/builtins.md#builtins-parseFlakeRef) now prints [--show-trace](@docroot@/command-ref/conf-file.html#conf-show-trace) items for the path in which it finds an evaluation error.
- [Path-like flake references](@docroot@/command-ref/new-cli/nix3-flake.md#path-like-syntax) now accept arbitrary unicode characters (except `#` and `?`).
- Error messages regarding malformed input to [`derivation add`](@docroot@/command-ref/new-cli/nix3-derivation-add.md) are now clearer and more detailed.
- The experimental feature `repl-flake` is no longer needed, as its functionality is now part of the `flakes` experimental feature. To get the previous behavior, use the `--file/--expr` flags accordingly.
- The `discard-references` feature has been stabilized.
This means that the
[unsafeDiscardReferences](@docroot@/contributing/experimental-features.md#xp-feature-discard-references)
attribute is no longer guarded by an experimental flag and can be used
freely.
- The JSON output for derived paths with are store paths is now a string, not an object with a single `path` field.
This only affects `nix-build --json` when "building" non-derivation things like fetched sources, which is a no-op.
- Introduce a new [`outputOf`](@docroot@/language/builtins.md#builtins-outputOf) builtin.
It is part of the [`dynamic-derivations`](@docroot@/contributing/experimental-features.md#xp-feature-dynamic-derivations) experimental feature.
- Introduce new flake installable syntax `flakeref#.attrPath` where the "." prefix denotes no searching of default attribute prefixes like `packages.<SYSTEM>` or `legacyPackages.<SYSTEM>`.
- Introduce new flake installable syntax `flakeref#.attrPath` where the "." prefix denotes no searching of default attribute prefixes like `packages.<SYSTEM>` or `legacyPackages.<SYSTEM>`.