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docs: merge builtin-constants into builtins

This commit is contained in:
Ryan Hendrickson 2024-07-07 15:57:23 -04:00
parent fd4b17ab2c
commit 95890b3e1d
16 changed files with 62 additions and 100 deletions

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# Built-in Constants
These constants are built into the Nix language evaluator:
<dl>

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</dl>

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# Built-in Functions
# Built-ins
This section lists the functions built into the Nix language evaluator.
All built-in functions are available through the global [`builtins`](./builtin-constants.md#builtins-builtins) constant.
This section lists the values and functions built into the Nix language evaluator.
All built-ins are available through the global [`builtins`](#builtins-builtins) constant.
For convenience, some built-ins can be accessed directly:
Some built-ins are also exposed directly in the global scope:
<!-- TODO(@rhendric, #10970): this list is incomplete -->
- [`derivation`](#builtins-derivation)
- [`import`](#builtins-import)

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A lookup path is an identifier with an optional path suffix that resolves to a [path value](@docroot@/language/types.md#type-path) if the identifier matches a search path entry.
The value of a lookup path is determined by [`builtins.nixPath`](@docroot@/language/builtin-constants.md#builtins-nixPath).
The value of a lookup path is determined by [`builtins.nixPath`](@docroot@/language/builtins.md#builtins-nixPath).
See [`builtins.findFile`](@docroot@/language/builtins.md#builtins-findFile) for details on lookup path resolution.

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> }
> ```
>
> [`builtins.currentSystem`](@docroot@/language/builtin-constants.md#builtins-currentSystem) has the value of the [`system` configuration option], and defaults to the system type of the current Nix installation.
> [`builtins.currentSystem`](@docroot@/language/builtins.md#builtins-currentSystem) has the value of the [`system` configuration option], and defaults to the system type of the current Nix installation.
- [`builder`]{#attr-builder} ([Path](@docroot@/language/types.md#type-path) | [String](@docroot@/language/types.md#type-string))

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<!-- TODO: mention the top-level environment -->
These values are available as attributes of [`builtins`](builtin-constants.md#builtins-builtins) as [`builtins.true`](builtin-constants.md#builtins-true) and [`builtins.false`](builtin-constants.md#builtins-false).
These values are available as attributes of [`builtins`](builtins.md#builtins-builtins) as [`builtins.true`](builtins.md#builtins-true) and [`builtins.false`](builtins.md#builtins-false).
The function [`builtins.isBool`](builtins.md#builtins-isBool) can be used to determine if a value is a boolean.
### String {#type-string}
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<!-- TODO: mention the top-level environment -->
This value is available as an attribute on the [`builtins`](builtin-constants.md#builtins-builtins) attribute set as [`builtins.null`](builtin-constants.md#builtins-null).
This value is available as an attribute on the [`builtins`](builtins.md#builtins-builtins) attribute set as [`builtins.null`](builtins.md#builtins-null).
## Compound values