Every commit certifies the Developer Certificate of Origin - #148
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The repository had no contribution agreement at all: nothing said what a contributor asserts about the provenance of a change, which is the first thing a diligence review asks for and the one thing a project cannot add retroactively. The DCO is the answer that costs a contributor nothing and signals nothing about relicensing: the code stays Apache-2.0, copyright stays with its author, and the only artefact is a Signed-off-by trailer git adds on its own. The DCO 1.1 text is in the repository verbatim. CONTRIBUTING.md gets a "Sign your work" section that says what the trailer certifies and how to add it, and its commit-message rule now names Signed-off-by as the one trailer that belongs. The pull request template gets a line for it. CI enforces it with a shell loop in a new `dco` job rather than the DCO app, so the rule is pinned in the repository like everything else and there is nothing to install or quietly uninstall. It runs on pull requests only, reads every non-merge commit in the range, requires a Signed-off-by trailer carrying the author's email, and exempts bot authors (dependabot signs anyway). The repository-signals test asserts the job's gate, its exemption, and that both documents say what they now must. Signed-off-by: arpan <contact@arpanghoshal.com>
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📝 WalkthroughWalkthroughThe repository adds Developer Certificate of Origin guidance, requires ChangesDCO sign-off enforcement
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Other Merge Risk: 🟡 Moderate · up to The new DCO gate can accept commits that lack a valid matching sign-off, undermining the contribution agreement. These localized enforcement checks should be corrected before merge. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 33.33% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 1 files. (4 skipped: 4 unsupported.) ✨ Finishing Touches 💡 2📝 Generate docstrings 💡
🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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Actionable comments posted: 2
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In @.github/workflows/ci.yml:
- Line 435: Update the sign-off validation condition in the workflow to parse
only the commit’s ending trailers with git interpret-trailers --parse, then
compare a complete parsed Signed-off-by trailer against the commit author
identity. Do not use a substring grep over the raw commit message, so unrelated
lines such as “Not Signed-off-by” are rejected.
- Line 433: Update the bot exemption logic around the name-case check to
authenticate the GitHub API request with GITHUB_TOKEN and exempt commits only
when the root-level .author.type equals Bot. Do not inspect .commit.author;
update the associated test to assert the authenticated root-author identity
check.
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📒 Files selected for processing (5)
.github/PULL_REQUEST_TEMPLATE.md.github/workflows/ci.ymlCONTRIBUTING.mdDCOtests/test_repository_signals.py
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Two review findings against the first version of the `dco` job. A substring grep over the whole commit message accepted any line that contained `Signed-off-by: ` and the author's email, so a sentence in the body could satisfy it without a trailer ever being added. The check now asks git for the parsed trailer block alone, with `only` and `valueonly`, and requires a value ending in the author's email, angle brackets included, so a prefix of the email does not pass either. The exemption for authors whose name ended in `[bot]` was a string anyone can set with `git config user.name`. It is gone, and so is the idea of an exemption: dependabot signs its commits off already, and any other bot that opens a pull request here can do the same. CONTRIBUTING.md and the repository-signals test say both things. Signed-off-by: arpan <contact@arpanghoshal.com>
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What this changes
Adds the Developer Certificate of Origin as the project's contribution agreement. No specification section: this is governance and CI, nothing under
src/.DCO: the 1.1 text, verbatim.CONTRIBUTING.md: a Sign your work section (whatSigned-off-bycertifies,git commit -s,git rebase --signoff), and the commit-message rule now namesSigned-off-byas the one trailer that belongs..github/PULL_REQUEST_TEMPLATE.md: a checklist line for it..github/workflows/ci.yml: adcojob, pull requests only, that reads every non-merge commit in the range and requires aSigned-off-bytrailer carrying the author's email. Bot authors are exempt. A shell loop rather than the DCO app so the rule is pinned in the repository with nothing to install.tests/test_repository_signals.py: asserts the job's gate and exemption, and that both documents say what they now must.The loop was exercised against a throwaway repo with a signed commit, an unsigned one, a bot commit and one signed with the wrong email: the first passes, the bot is skipped, the other two are named. This PR is the first real run.
Not a CLA, deliberately. The code stays Apache-2.0 and copyright stays with each author; nothing here reserves a right to relicense.
Checklist
test_every_pull_request_commit_is_signed_offand the extended community-files assertions were red againstmainand are green here.CLAIMS.md. No README sentence changed.CONTRIBUTING.mdis not under the audit; no site page touched.scripts/check.shgreen for the touched files (ruff format --check,ruff check,pytest tests/test_repository_signals.py tests/test_packaging.py).src/merges on green CI alone. Nothing insrc/.Mutation table
dcojob removed fromci.ymltest_every_pull_request_commit_is_signed_offKeyError: 'dco')if:gate removed[bot]exemption removed from the looptest_the_community_files_exist_and_say_what_they_mustDeveloper Certificate of Origin)Signed-off-by)🤖 Generated with Claude Code
Summary by CodeRabbit
Documentation
Signed-off-bytrailer under the Developer Certificate of Origin.Chores
Tests