LocalStore::addToStore(): Show hash mismatches in SRI format

[edolstra]

Motivation

This is more consistent with e.g. hash mismatches in fixed-output derivations and the output of nix path-info.

Context

Summary by CodeRabbit

• Bug Fixes
  • Updated error message formatting for NAR content hash mismatches to display hashes in SRI format, improving readability and consistency. This change only affects the displayed error text; comparison logic and behavior remain unchanged.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 4536769a-6431-46ca-9c8d-98d7af18d7cc

📥 Commits

Reviewing files that changed from the base of the PR and between 2898ddb and ac3c92f.

📒 Files selected for processing (1)

• src/libstore/local-store.cc

✅ Files skipped from review due to trivial changes (1)

• src/libstore/local-store.cc

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📝 Walkthrough

Walkthrough

Error message text for NAR content hash mismatches was changed to present both expected and computed hashes using SRI formatting instead of Nix32; no other logic or branching was modified.

Changes

Cohort / File(s)	Summary
Error message formatting src/libstore/local-store.cc	Updated error string to format both expected (info.narHash) and computed (hashResult.hash) values using HashFormat::SRI instead of HashFormat::Nix32 for NAR mismatch reports.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 I hopped through bytes and found a tweak so spry,
Old Nix32 gave way — now SRI catches the eye,
When NARs disagree and errors chime,
I smile and nibble code, one hop at a time. ✨

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately reflects the main change: converting hash mismatch error messages from Nix32 to SRI format in LocalStore::addToStore().

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch hash-mismatch-sri

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[github-actions]

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