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fix: install each --version into its own directory - #310
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pre-commit shares one hook environment between all projects on a machine that use the same rev. Every run with a different --version replaced the wheel in it, so two projects pinned to different versions reinstalled (and contacted PyPI) on each switch, and a project without --version ran whatever version another project had left behind. A --version is now installed with `pip install --target` into <env>/cpp-linter-hooks/<tool>-<version>/ and the hook runs the binary the wheel ships. Versions coexist, each is downloaded once, and later runs use it without network access. Runs without --version keep using the wheel in the environment and never pick a per-version install.
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| # not replace an existing directory. | ||
| shutil.rmtree(target, ignore_errors=True) | ||
| command += ["--target", target] | ||
| result = subprocess.run(command, capture_output=True, text=True, check=False) |
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Same S8705 finding as on #303, which was triaged as a false positive. The command is a list run without a shell, and the only user input in it is --version from the hook's .pre-commit-config.yaml. That input reaches pip only as the single argument clang-format==<version>, where <version> is the matching version from PyPI's release list. The new --target path is built from the same version under the hook environment. No input from an LLM is involved, and the input can't add a pip option. The finding needs a maintainer to mark it as a false positive in SonarCloud.
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WalkthroughExplicit version requests can reuse matching installed wheels or completed per-version installs. When no suitable tool is installed, the resolver installs the requested version into its own directory. Unversioned requests do not use per-version installs. ChangesTool resolution
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Possibly related PRs
Merge Risk: 🔵 Low · up to
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Docstring Coverage |  |
Docstring coverage is 47.50% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 40 functions across 2 files. (2 skipped: … | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Description Check Check skipped - CodeRabbit’s high-level summary is enabled. Title check The title clearly and concisely describes the main change: isolating each --version installation in its own directory. Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request.
Full details: Docstring Coverage
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Explanation
Docstring coverage is 47.50% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 40 functions across 2 files. (2 skipped: 2 unsupported.)
Resolution
Write docstrings for the functions missing them to satisfy the coverage threshold.
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Actionable comments posted: 1
- 🪄 Fix comments: Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @README.md:
- Around line 72-74: Update the README’s network-access statement to clarify
that contacting pypi.org is required only when no matching installed wheel is
available; preserve the explanation of parallel hook runs waiting for the wheel
installation.
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📒 Files selected for processing: 4
AGENTS.mdREADME.mdcpp_linter_hooks/util.pytests/test_util.py
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Removed unnecessary details from the important note and deleted sections on key files, core patterns, and CI.
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Footnotes
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #310 +/- ##
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Coverage 100.00% 100.00%
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Files 4 4
Lines 541 584 +43
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+ Hits 541 584 +43 ☔ View full report in Codecov by Harness. 🚀 New features to boost your workflow:
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Problem
pre-commit keeps one hook environment per (repo,
rev,additional_dependencies) and shares it between all projects on a machine. Every--versionwas pip-installed into that one environment, replacing the wheel that was there. With v1.8.0:--version=18→21→18reinstalled every time.--versionruns whatever version another project left behind: after a--version=18run elsewhere, an unpinned run printedUsing installed clang-format Python wheel version 18.1.8.Change
--versionis installed withpip install --targetinto<env>/cpp-linter-hooks/<tool>-<version>/, and the hook runs the binary the wheel ships (<package>/data/bin, or<package>/binin old clang-format wheels; the wheel's console script cannot run from a--targetdirectory).--version: the environment's wheel (additional_dependencies) if it matches, then the newest finished per-version install that matches (exact or prefix,RECORDpresent), then PyPI + install under the existing lock.--version, nothing changes: the environment's wheel is used, otherwise the latest wheel is installed into the environment. Per-version installs are never used, so other projects' pins do not leak in.Verification
--version=180.57 s (install),180.08 s,210.56 s (install),180.06 s,21.1.80.06 s, no version → installs 23.1.3 into the environment;clang-format-18.1.8/andclang-format-21.1.8/coexist. clang-tidy 21.1.6 from its directory runs and finds its resource headers.pip --targetcommand.Disk: every version a project asks for stays in the hook environment until pre-commit removes the environment (
pre-commit gc/clean).Default versions decided by
revand clang-format as a real dependency will follow in a separate PR (breaking, 2.0.0).Summary by CodeRabbit