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29 lines
1.3 KiB
Markdown
29 lines
1.3 KiB
Markdown
# Release 3.8.0 (2025-07-10)
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* Based on [upstream Nix 2.30.0](../release-notes/rl-2.30.md).
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## What's Changed
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### Faster CI with `nix flake check`
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`nix flake check` no longer downloads flake outputs if no building is necessary.
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This command is intended to validate that a flake can fully evaluate and all outputs can build.
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If the outputs are available in a binary cache then both properties are confirmed to be true.
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Notably, downloading the output from the binary cache is not strictly necessary for the validation.
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Previously, `nix flake check` would download a flake output if the full build is available in a binary cache.
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Some users will find this change significantly reduces costly bandwidth and CI workflow time.
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PR: [DeterminateSystems/nix-src#134](https://github.com/DeterminateSystems/nix-src/pull/134)
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### Improved flake locking of transitive dependencies
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Determinate Nix now re-locks all transitive dependencies when changing a flake input's source URL.
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This fixes an issue where in some scenarios Nix would not re-lock those inputs and incorrectly use the old inputs' dependencies.
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PR: [DeterminateSystems/nix-src#137](https://github.com/DeterminateSystems/nix-src/pull/137)
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**Full Changelog**: [v3.7.0...v3.8.0](https://github.com/DeterminateSystems/nix-src/compare/v3.7.0...v3.8.0)
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