astral-sh/ruff vs rust-lang/book
astral-sh/ruff shows stronger signals overall
As of June 2026, ruff shows healthier maintenance signals than book. ruff rates Healthy overall while book rates Mixed. ruff was committed to today with 21+ active contributors, while book last saw a commit 2 months ago with 11+ active contributors. ruff is MIT-licensed while book is Other-licensed. Neither has known critical or high-severity CVEs in its dependency tree.
Informational only. RepoPilot summarises public signals at the time of analysis. Not professional, security, or legal advice.
astral-sh/ruff →
Healthy across the board
Permissive license, no critical CVEs, actively maintained — safe to depend on.
Has a license, tests, and CI — clean foundation to fork and modify.
Documented and popular — useful reference codebase to read through.
No critical CVEs, sane security posture — runnable as-is.
- ✓Last commit today
- ✓21+ active contributors
- ✓Distributed ownership (top contributor 35% of recent commits)
- ✓MIT licensed
- ✓CI configured
- ✓Tests present
Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against OpenSSF Scorecard
rust-lang/book →
Single-maintainer risk — review before adopting
non-standard license (Other)
Has a license, tests, and CI — clean foundation to fork and modify.
Documented and popular — useful reference codebase to read through.
No critical CVEs, sane security posture — runnable as-is.
- ⚠Single-maintainer risk — top contributor 88% of recent commits
- ⚠Non-standard license (Other) — review terms
- ✓Last commit 2w ago
- ✓11 active contributors
- ✓Other licensed
- ✓CI configured
- ✓Tests present
What would improve this?
- →Use as dependency Concerns → Mixed if: clarify license terms
Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests
Signal-by-signal breakdown
| ruff | book | |
|---|---|---|
| Stars | 48,249 | 17,729 |
| Last commit | today | 2mo ago |
| License | MIT | Other |
| Open issues | 2,036 | 425 |
| Has tests | ✓ | ✓ |
| Has CI | ✓ | ✓ |
| Test coverage | 100% | 2% |
| Dependency CVEs | No CVEs | No CVEs |
| Architecture grade | — | — |
| Cycles | — | — |
| Bottom-line | Healthy signals | Mixed signals |
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