Bump ruff from 0.15.18 to 0.16.0

[dependabot]

Bumps ruff from 0.15.18 to 0.16.0.

Release notes

Sourced from ruff's releases.

0.16.0

Release Notes

Released on 2026-07-23.

Check out the blog post for a migration guide and overview of the changes!

Breaking changes

• Ruff now enables a much larger set of rules by default (413, up from 59). See the blog post for more details and the new Default Rules page for a full listing of the enabled rules. Note that this is primarily an expansion, but 18 of the more opinionated pycodestyle (E) and pyflakes (F) rules have been removed from the default set: E401, E402, E701, E702, E703, E711, E712, E713, E714, E721, E731, E741, E742, E743, F403, F405, F406, and F722.

• Ruff can now format Python code blocks in Markdown files and will do this by default. See the documentation for more details.

• Ruff now supports ruff: ignore comments at the ends of lines, like noqa comments, or on the line preceding a diagnostic. For example, these both suppress an unused-import (F401) diagnostic:

  import math  # ruff: ignore[F401]
  ruff: ignore[F401]
  import os

• Fixes are now shown in check and format --check output:

  ❯ ruff format --check .
  unformatted: File would be reformatted
   --> try.md:1:1
    |
  1 | ```python
    - import   math
  2 + import math
  3 | ```
    |
  1 file would be reformatted

  This example also shows off the Markdown formatting.

• format --check now supports the same output formats as the linter, including the github and gitlab outputs for rendering annotations in CI:

  ❯ ruff format --check --output-format github .
  ::error title=ruff (unformatted),file=try.md,line=2,col=8,endLine=2,endColumn=10::try.md:2:8: unformatted: File would be reformatted

  See the CLI help or documentation for the full list of supported formats.

• The filename, location, end_location, fix.edits[].location, and fix.edits[].end_location fields in the JSON output format may now be null rather than defaulting to the empty string and row 1, column 1, respectively.

... (truncated)

Changelog

Sourced from ruff's changelog.

0.16.0

Released on 2026-07-23.

Check out the blog post for a migration guide and overview of the changes!

Breaking changes

• Ruff now enables a much larger set of rules by default (413, up from 59). See the blog post for more details and the new Default Rules page for a full listing of the enabled rules. Note that this is primarily an expansion, but 18 of the more opinionated pycodestyle (E) and pyflakes (F) rules have been removed from the default set: E401, E402, E701, E702, E703, E711, E712, E713, E714, E721, E731, E741, E742, E743, F403, F405, F406, and F722.

• Ruff can now format Python code blocks in Markdown files and will do this by default. See the documentation for more details.

• Ruff now supports ruff: ignore comments at the ends of lines, like noqa comments, or on the line preceding a diagnostic. For example, these both suppress an unused-import (F401) diagnostic:

  import math  # ruff: ignore[F401]
  ruff: ignore[F401]
  import os

• Fixes are now shown in check and format --check output:

  ❯ ruff format --check .
  unformatted: File would be reformatted
   --> try.md:1:1
    |
  1 | ```python
    - import   math
  2 + import math
  3 | ```
    |
  1 file would be reformatted

  This example also shows off the Markdown formatting.

• format --check now supports the same output formats as the linter, including the github and gitlab outputs for rendering annotations in CI:

... (truncated)

Commits

• a2635fd Bump 0.16.0 (#27136)
• 3433449 [ty] Reuse full call diagnostics for implicit setter calls (#27115)
• 2240070 Reflect ruff: ignore and --add-ignore stabilization in documentation (#27...
• 17ef711 Stabilize --add-ignore (#27125)
• ef912bb Add newly stabilized rules to defaults (#27055)
• b30f040 Stabilize new default rules (#27035)
• bcd70c5 Exclude Markdown files from format-dev runs (#27052)
• 87e51e2 Fix format --check spans for syntax errors (#27045)
• afe2723 [flake8-gettext] Stabilize qualified-name and built-in binding resolution (...
• a9702d8 [flake8-bandit] Stabilize string literal binding resolution (S310) (#26944)
• Additional commits viewable in compare view

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[rtibblesbot]

🔵 Review posted

Last updated: 2026-08-01 01:01 UTC

[rtibblesbot]

PR #233 — dependency review: ruff 0.15.18 → 0.16.0, dev-only ([dependency-groups].dev), lockfile-only diff (21/21 lines in the ruff block, no new transitive deps).

Semver risk: 0.x minor — breaking under ruff's own versioning.

Breaking changes: the headline one is the default rule set expanding 59 → 413 rules. It does not apply here: pyproject.toml sets select = ["E", "F", "W", "C90", "I"], so defaults are never consulted, and the 18 rules dropped from defaults (E401, E402, E711, E712, E741, F403, F405, …) are still covered by the explicit E/F selectors. Also new: ruff format now formats Python code blocks in Markdown by default (0.16.0 walks 45 files vs 0.15.18's 42 — CHANGELOG.md, README.md, docs/README.md; all already conformant), and ruff: ignore comments (additive, unused here). No removed config options, no target-version impact.

Security fixes: none. Peer/transitive changes: none — ruff ships dependency-free wheels.

Compatibility: verified locally against this branch — ruff@0.16.0 check → all checks passed; ruff@0.16.0 format --check → 45 files already formatted. No code changes required.

CI: failing, but not from this bump. The Linting workflow fails on the rebuild-from-specs hook regenerating js/package.json 0.2.18 → 0.2.19 (setuptools-scm resolves a post-tag dev version on PR branches). All ruff-driven hooks passed in the same run. The identical failure reproduces on PR #230, which touches no Python tooling at all, and on #231/#232; main was last green at 3dc6503. Needs a separate fix (tag the release, or make version regeneration tolerate dev versions), not one inside this dependabot PR. Python tests was still queued at review time — worth a glance before merge.

Follow-up (out of scope): .pre-commit-config.yaml pins astral-sh/ruff-pre-commit at v0.15.7 and dependabot.yml registers no pre-commit ecosystem, so this bump only reaches make build — the hooks that actually gate CI stay on 0.15.7. Pre-existing skew, worth its own issue.

COMMENT rather than APPROVE solely because CI is red.

---

@rtibblesbot's comments are generated by an LLM, and should be evaluated accordingly

How was this generated?

Ran a dependency-update review pipeline over the version bump:

• Classified the bump by semver (patch / minor / major) and dependency type (production vs. development)
• Extracted the changelog and release notes across the version range
• Assessed compatibility with this project's usage and whether any code changes are required
• Treated CI as the primary safety net
• Scaled the review depth to the update's risk
• Chose the verdict from semver risk, changelog findings, and CI status