[dajiaohuang]

Move the .buildinfo mode update out of finally. Failed downloads, configuration, builds, or installation no longer mark an unsuccessful full build as ready for incremental use. The working directory is still restored by finally.\n\nValidation: source inspection and git diff --check; no tests or builds were run.

Summary by CodeRabbit

• Bug Fixes
  • The selected build mode is now recorded after the build flow, including when an error occurs.

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📝 Walkthrough

Walkthrough

The build script now calls write_mode(mode) after restoring the parent directory in its finally block. This records the selected mode whether the build succeeds or raises an exception.

Changes

Build mode recording

Layer / File(s)	Summary
Record the selected mode scripts/build_pg_ext.py	The script calls write_mode(mode) after restoring the parent directory, including when the build raises an exception.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~3 minutes

Change: Bug fix

Merge Risk: 🟡 Moderate · up to c83fa

A failed full build can leave a mode marker that a later incremental build trusts. Invalidate the old marker before full-build work starts.

Architecture Summary

Architecture risk: 🔵 Low · up to c83fa

The change affects 1 system.

Changed systems: scripts

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — scripts (service) was modified; 1 changed file maps to changed impact.

Before / after behavior

• observed — Modified behavior in scripts/build_pg_ext.py: write_mode(mode) was moved into the finally block after os.chdir(".."), so the mode is written whether the build succeeds or raises an exception.

🚥 Pre-merge checks | ✅ 4 | ❌ 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%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 1 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the main intended change: record the build mode only after a successful install.
Description check	✅ Passed	The description explains the mode update change, the failure behavior, the preserved working-directory restoration, and the validation performed. It does not use all template headings, but it provides…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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_{A rabbit checks the build path twice
Then writes the mode, both calm and nice
If builds succeed or errors rise
The selected mode is there to find
I nibble clover, pleased to see
The record waits reliably}

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Actionable comments posted: 1

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Inline comments:
Review comments at @scripts/build_pg_ext.py:
- Line 182: Update the full-build flow around write_mode to invalidate the
existing .buildinfo marker before starting the build, then write the new mode
only after the build succeeds. Ensure a failed full build cannot leave a
reusable mode marker.

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ℹ️ Review info

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Configuration used: Organization UI

Review profile: CHILL

Plan: Advanced

Run ID: 892fba1b-8bf8-4eea-aec1-c4fadfa82aa1

📥 Commits

Reviewing files that changed from the base of the PR and between f432041 and c83fa6a.

📒 Files selected for processing (1)

• scripts/build_pg_ext.py

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[dajiaohuang]

Fixed in 831349b. Before a full build starts, the previous deeplake-pg mode entry is removed from .buildinfo while preserving unrelated component and metadata entries. A successful build still records the requested mode only after installation completes.

Actual-script tests with external download/build commands mocked reproduce the stale-mode behavior and cover failures during download, configuration, compilation and installation. Each full-build failure leaves no reusable mode; successful full/incremental builds record the mode, and an incremental failure preserves the previously successful mode. Working-directory restoration and unrelated metadata preservation also pass. No native extension build was executed. git diff --check passed.

[khustup2]

Verified: write_mode(mode) in finally records a failed full build as ready for incremental use. Moving it after the try block is correct.

[khustup2]

Re-approved with 831349b. Dropping the stale deeplake-pg mode before a full build closes the remaining gap: without it a failed rebuild still reads the previous mode as valid.