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reword details on keeping closure property

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Valentin Gagarin 2022-04-29 02:10:24 +02:00
parent e90586c0a4
commit b5ca3d12b6
1 changed files with 5 additions and 5 deletions
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doc/manual/src/architecture/store/objects.md
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@ -43,13 +43,13 @@ Nix stores have the *closure property*: for each store object in the store, all
Building, copying and deleting store objects must be done in a way that obeys this property:
- Build results must only refer to store objects in the closure of the build inputs.
- Store objects being copied must refer to objects already in the destination store.
Recursive copying must either proceed in dependency order or be atomic.
- We can only safely delete unreferenced objects.
- When copying, to maintain correctness, either the result must be "revealed" atomically to the destination store, or objects must be copied in reference-dependency order.
- Newly built store objects must only refer to store objects in the closure of the build inputs.
This ensures the purity of the build.
### Reference scanning
While references could be arbitrary paths, Nix requires them to be store paths to ensure correctness.