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Document store object content addressing & improve JSON format

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The JSON format no longer uses the legacy ATerm `r:` prefixing nonsese,
but separate fields.

Progress on #9866

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
This commit is contained in:
John Ericson 2024-04-09 17:07:39 -04:00
parent ba2911b03b
commit 1c75af969a
21 changed files with 268 additions and 65 deletions
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doc/manual/rl-next/derivation-json-change.md Normal file
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---
synopsis: Modify `nix derivation {add,show}` JSON format
issues: 9866
prs: 10722
---
The JSON format for derivations has been slightly revised to better conform to our [JSON guidelines](@docroot@contributing/cli-guideline#returning-future-proof-json).
In particular, the hash algorithm and content addressing method of content-addresed derivation outputs is now separated into two fields `hashAlgo` and `method`,
rather than one field with an arcane `:`-separated format.
This JSON format is only used by the experimental `nix derivation` family of commands, at this time.
Future revisions are expected as the JSON format is still not entirely in compliance even after these changes.