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Merge pull request #7916 from NixOS/release-notes

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2.14 release notes
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Eelco Dolstra 2023-02-28 14:21:42 +01:00 committed by GitHub
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doc/manual/src/SUMMARY.md.in
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- [CLI guideline](contributing/cli-guideline.md)
- [Release Notes](release-notes/release-notes.md)
- [Release X.Y (202?-??-??)](release-notes/rl-next.md)
- [Release 2.14 (2023-02-28)](release-notes/rl-2.14.md)
- [Release 2.13 (2023-01-17)](release-notes/rl-2.13.md)
- [Release 2.12 (2022-12-06)](release-notes/rl-2.12.md)
- [Release 2.11 (2022-08-25)](release-notes/rl-2.11.md)

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doc/manual/src/release-notes/rl-2.14.md Normal file
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# Release 2.14 (2023-02-28)
* A new function `builtins.readFileType` is available. It is similar to
`builtins.readDir` but acts on a single file or directory.
* In flakes, the `.outPath` attribute of a flake now always refers to
the directory containing the `flake.nix`. This was not the case for
when `flake.nix` was in a subdirectory of e.g. a Git repository.
The root of the source of a flake in a subdirectory is still
available in `.sourceInfo.outPath`.
* In derivations that use structured attributes, you can now use `unsafeDiscardReferences`
to disable scanning a given output for runtime dependencies:
```nix
__structuredAttrs = true;
unsafeDiscardReferences.out = true;
```
This is useful e.g. when generating self-contained filesystem images with
their own embedded Nix store: hashes found inside such an image refer
to the embedded store and not to the host's Nix store.
This requires the `discard-references` experimental feature.

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doc/manual/src/release-notes/rl-next.md
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# Release X.Y (202?-??-??)
* A new function `builtins.readFileType` is available. It is similar to
`builtins.readDir` but acts on a single file or directory.
* In flakes, the `.outPath` attribute of a flake now always refers to the
directory containing the `flake.nix`. This was not the case for when
`flake.nix` was in a subdirectory of e.g. a git repository.
The root of the source of a flake in a subdirectory is still available in
`.sourceInfo.outPath`.
* The `builtins.readDir` function has been optimized when encountering not-yet-known
file types from POSIX's `readdir`. In such cases the type of each file is/was
discovered by making multiple syscalls. This change makes these operations
lazy such that these lookups will only be performed if the attribute is used.
This optimization affects a minority of filesystems and operating systems.
* In derivations that use structured attributes, you can now use `unsafeDiscardReferences`
to disable scanning a given output for runtime dependencies:
```nix
__structuredAttrs = true;
unsafeDiscardReferences.out = true;
```
This is useful e.g. when generating self-contained filesystem images with
their own embedded Nix store: hashes found inside such an image refer
to the embedded store and not to the host's Nix store.
This requires the `discard-references` experimental feature.