project
Ruff is a fast Python linter and code formatter, written in Rust, used to catch style and correctness issues in Python codebases.
No evidence-backed relationships are recorded.
A four-way test in a clean Python 3.12 container clocked pip's warm install at 13 seconds and uv's at 56 milliseconds. The speed comes from a filesystem link that holds only while the cache and the environment share a mount.
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A dev.to post argues that the rules worth committing to .github/copilot-instructions.md are the ones a linter cannot check and the model cannot infer, such as money being Decimal and datetime.utcnow() returning a naive datetime.
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An AWS EC2 rig with mcp unbounded in requirements.txt picked up mcp 2.2.0 and stopped importing. The server edit is two lines; the pip resolver and the test suite's camelCase attribute reads are where the work sits.
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The four-stage path from a local green check to main is worth adopting, but the reference pre-push hook anchors its forbidden-paths regex so tightly that no real fixture file can match it, leaving the escape hatch unreachable.
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Version 0.2.0 decides admission by propagating integrity labels through a plan's dependency graph. The interesting cost is that the harness now has to declare, before acting, what the agent intends to do.
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The fifth Django Developers Survey puts PostgreSQL at 76 to 79 percent for five straight years. That kind of stillness in the core is why a team can rip out its packaging, linting and typing all at once.
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contextlib.suppress discards the exception exactly as try/except/pass does, but it is a call expression rather than a handler, so rules that dispatch on handlers never see it. One new analyzer counts the gap.
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A Rust duplicate-code checker claims 191x to 250x against isolated Pylint. The more useful part of the argument is why R0801 cannot be sharded across CI workers.
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A Rust duplicate-code checker for Python claims roughly 219x on the one job Ruff skips and Pylint R0801 does slowly. Version 2 spent its effort on stable finding identity, not the algorithm.
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Eleven real vulnerabilities in roughly 300 pull requests over four months. The noise was bad enough that the fix was a second agent whose only job is refuting the first.
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A dev.to walkthrough maps Git branches to Asset Bundle targets and stacks seven automated gates before a human approves prod. The mapping, not the YAML, is the load-bearing part.
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A developer hit the seam between Ruff's speed and Pylint's R0801 and wrote a single-purpose checker called Arid rather than keep waiting. No benchmarks published.
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