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reformat for readability
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2 changed files with 13 additions and 5 deletions
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@ -15,8 +15,12 @@ Each of *paths* is processed as follows:
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1. If it is not [valid], substitute the store derivation file itself.
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1. If it is not [valid], substitute the store derivation file itself.
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2. Realise its [output paths]:
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2. Realise its [output paths]:
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- Try to fetch from [substituters] the [store objects] associated with the output paths in the store derivation's [closure].
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- Try to fetch from [substituters] the [store objects] associated with the output paths in the store derivation's [closure].
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- With [content-addressed derivations] (experimental): Determine the output paths to realise by querying content-addressed realisation entries in the [Nix database].
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- With [content-addressed derivations] (experimental):
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- For any store paths that cannot be substituted, produce the required store objects. This involves first realising all outputs of the derivation's dependencies and then running the derivation's [`builder`](@docroot@/language/derivations.md#attr-builder) executable. <!-- TODO: Link to build process page #8888 -->
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Determine the output paths to realise by querying content-addressed realisation entries in the [Nix database].
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- For any store paths that cannot be substituted, produce the required store objects:
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1. Realise all outputs of the derivation's dependencies
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2. Run the derivation's [`builder`](@docroot@/language/derivations.md#attr-builder) executable
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<!-- TODO: Link to build process page #8888 -->
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- Otherwise, and if the path is not already valid: Try to fetch the associated [store objects] in the path's [closure] from [substituters].
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- Otherwise, and if the path is not already valid: Try to fetch the associated [store objects] in the path's [closure] from [substituters].
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If no substitutes are available and no store derivation is given, realisation fails.
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If no substitutes are available and no store derivation is given, realisation fails.
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@ -33,11 +33,15 @@
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Ensure a [store path] is [valid][validity].
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Ensure a [store path] is [valid][validity].
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This means either running the [`builder`](@docroot@/language/derivations.md#attr-builder) executable as specified in the corresponding [derivation], or fetching a pre-built [store object] from a [substituter], or delegating to a [remote builder](@docroot@/advanced-topics/distributed-builds.html) and retrieving the outputs. <!-- TODO: link [running] to build process page, #8888 -->
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This can be achieved by:
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- Fetching a pre-built [store object] from a [substituter]
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- Running the [`builder`](@docroot@/language/derivations.md#attr-builder) executable as specified in the corresponding [derivation]
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- Delegating to a [remote builder](@docroot@/advanced-topics/distributed-builds.html) and retrieving the outputs
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<!-- TODO: link [running] to build process page, #8888 -->
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See [`nix-build`](./command-ref/nix-build.md) and [`nix-store --realise`](@docroot@/command-ref/nix-store/realise.md).
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See [`nix-store --realise`](@docroot@/command-ref/nix-store/realise.md) for a detailed description of the algorithm.
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See [`nix build`](./command-ref/new-cli/nix3-build.md) (experimental).
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See also [`nix-build`](./command-ref/nix-build.md) and [`nix build`](./command-ref/new-cli/nix3-build.md) (experimental).
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[realise]: #gloss-realise
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[realise]: #gloss-realise
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