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Document Store Derivations and Deriving Paths (#12290)

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This is a big step documenting the store layer on its own, separately from the evaluator (and `builtins.derivation`).

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
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John Ericson 2025-02-09 20:30:07 -05:00 • committed by GitHub
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src/libstore/globals.hh
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@ -189,7 +189,7 @@ public:
this, SYSTEM, "system",
R"(
The system type of the current Nix installation.
Nix will only build a given [derivation](@docroot@/language/derivations.md) locally when its `system` attribute equals any of the values specified here or in [`extra-platforms`](#conf-extra-platforms).
Nix will only build a given [store derivation](@docroot@/glossary.md#gloss-store-derivation) locally when its `system` attribute equals any of the values specified here or in [`extra-platforms`](#conf-extra-platforms).
The default value is set when Nix itself is compiled for the system it will run on.
The following system types are widely used, as Nix is actively supported on these platforms:
@ -825,7 +825,7 @@ public:
R"(
System types of executables that can be run on this machine.
Nix will only build a given [derivation](@docroot@/language/derivations.md) locally when its `system` attribute equals any of the values specified here or in the [`system` option](#conf-system).
Nix will only build a given [store derivation](@docroot@/glossary.md#gloss-store-derivation) locally when its `system` attribute equals any of the values specified here or in the [`system` option](#conf-system).
Setting this can be useful to build derivations locally on compatible machines:
- `i686-linux` executables can be run on `x86_64-linux` machines (set by default)