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add hint at what implementation would look like

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Valentin Gagarin 2023-06-15 15:01:37 +02:00 • committed by GitHub
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rfcs/0137-nix-language-version.md
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@ -354,6 +354,9 @@ Other discussions around language changes:
1. Semantics are preserved across file boundaries for past language versions. 1. Semantics are preserved across file boundaries for past language versions.
This should be fairly straightforward to implement since values passed around in the evaluator carry all the information needed to force them.
Newer parts of the evaluator can always wrap their values in interfaces that are accepted by older parts, as far as possible.
Example: [Best-effort interoperability](#best-effort-interoperability) Example: [Best-effort interoperability](#best-effort-interoperability)
<details><summary>Arguments</summary> <details><summary>Arguments</summary>