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ci: gate publish.yml on tags and move PyPI to Trusted Publishing - #281
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Two risks drove this change. Risk 1: a floating action pin sat next to a PyPI token. The checkout step read "actions/checkout@master". That pins a mutable branch, not a tag or a commit SHA. Any commit that lands on the upstream default branch ran here at once, with no review gate. The same job held secrets.PYPI_API_TOKEN. A bad upstream commit could read that token. Risk 2: the workflow ran on every push. No branch filter and no tag filter existed. Every commit on every branch ran checkout, Python setup, the pandoc install, the README rewrite, and a full build. Only the last step checked the ref, so the build output was thrown away every time. Changes: - The trigger is "push: tags: [v*]" plus workflow_dispatch. The tag pattern matches the commitizen tag_format "v$version". - actions/checkout@v7 and actions/setup-python@v7. - The top level sets "permissions: contents: read". The job sets "permissions: id-token: write" and "environment: pypi". - The job sets timeout-minutes. - The password input to pypa/gh-action-pypi-publish is gone. Trusted Publishing uses the OIDC token from id-token: write. pypa/gh-action-pypi-publish stays at release/v1. PyPA documents that as an intended rolling branch for this action. The pandoc step stays. It appends the changelog to the PyPI long description. README.rst is a symlink to the Sphinx source docs/intro.rst. The two files use different formats, so they do not concatenate under one content type. The step rewrites README.rst inside the CI checkout only. It never commits the change back. Refs #272
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📝 WalkthroughWalkthroughThe PyPI workflow now runs for version tags or manual dispatch. It uses updated Actions, Python 3.12, explicit permissions, a ChangesPyPI publishing
Priority: ⬆️ High Estimated code review effort: 2 (Simple) | ~10 minutes Severity of issue fixed: High Merge Risk: 🟠 High · up to The workflow improves publish gating and adopts trusted publishing, but its current permissions can prevent releases from checking out the source, while build steps retain unnecessary publishing and repository credentials. These issues should be fixed before merge. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 inconclusive)
✅ Passed checks (4 passed)
Full details: Linked Issues checkExplanation The workflow satisfies the verifiable coding requirements in issue ✨ Finishing Touches🧪 Generate unit tests (beta)
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In @.github/workflows/publish.yml:
- Line 19: Split the build-and-publish workflow into separate build and publish
jobs: run build commands in a job without OIDC permissions, upload the
distributions as an artifact, then download that artifact in a publish-only job.
Keep environment pypi and id-token: write exclusively on the publish job,
preserving the existing publishing behavior.
- Around line 18-19: Update the job-level permissions map in the publish
workflow to include contents: read alongside id-token: write, preserving
checkout access while retaining the required identity-token permission.
- Line 21: Update the actions/checkout step to set persist-credentials to false,
preventing the GitHub token from remaining configured while subsequent
repository-controlled packaging code runs.
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…edentials Job-level permissions replace the workflow map, so id-token: write alone set contents to none and broke actions/checkout. Keep contents: read next to id-token: write, and set persist-credentials: false on checkout. Co-authored-by: Jayson Reis <santosdosreis@gmail.com>
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Situation: Job-level Task: Apply the smallest safe review fixes on this PR. Do not split build vs publish. Evidence:
Commit: |
Keep OIDC id-token write and the pypi environment on the publish job only. The build job uploads dist/ as an artifact; publish downloads it and does not rebuild. Co-authored-by: Jayson Reis <santosdosreis@gmail.com>
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| - name: Setup pandoc for changelog conversion | ||
| run: sudo apt update && sudo apt install -y pandoc | ||
| - name: Write pypi's readme | ||
| persist-credentials: false |
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When this release workflow runs, persist-credentials is passed to actions/setup-python, which does not define that input, so it is ignored while actions/checkout@master continues to persist its token. More importantly, the checkout action remains on the mutable master ref; a compromised update there could alter dist/, and the publish job would then upload that artifact to PyPI. Use the intended actions/checkout@v7 step and place this with block beneath it.
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2 participants
What changed
.github/workflows/publish.ymlis rewritten.push: tags: ["v*"]plusworkflow_dispatch. It no longerruns on every push. The tag pattern matches the commitizen
tag_formatofv$versionin.cz.yaml.actions/checkout@v7andactions/setup-python@v7.permissions: contents: read. The job setspermissions: id-token: writeandenvironment: pypi.timeout-minutes: 10.password:input topypa/gh-action-pypi-publishis gone.Why
Two risks sat in one job. The checkout step read
actions/checkout@master,which pins a mutable branch rather than a tag or a commit SHA. Any commit that
lands on the upstream default branch ran there at once, with no review gate,
in the same job that held
secrets.PYPI_API_TOKEN. Separately, the workflowran on every push to every branch, and threw the build output away each time,
because only the last step checked the ref.
Verification
The publish job cannot run on a pull request. It triggers on a tag push and on
workflow_dispatchonly. Verification here is limited to what runs off thetag.
Result: the workflow YAML parses.
Result:
261 passed. This matches the baseline onmain.Result: 0 errors.
Action tags were checked against their upstream release lists.
actions/checkoutis atv7.0.1andactions/setup-pythonatv7.0.0.The real end-to-end check is step 4 above: push a tag and confirm the publish
succeeds.
Risks
A reviewer must check four points.
hazard. A merge before step 1 and step 2 breaks the next release.
environment: pypimust exist in GitHub settings. A job that names amissing environment fails to start.
pypa/gh-action-pypi-publishstays atrelease/v1. That is deliberate.PyPA documents
release/v1as an intended rolling branch for this action.This is the one floating pin that stays, and it no longer sits next to a
long-lived token.
the PyPI long description.
README.rstis a symlink to the Sphinx sourcedocs/intro.rst. The two files use different formats, so they do notconcatenate under one content type. Converting
README.rstto Markdownwould break the Sphinx build. The step rewrites
README.rstinside the CIcheckout only. It never commits the change back.
Out of scope, and noted in the issue: tags
v0.31.3,v0.31.4, andv0.32.0have no GitHub release. The newest release is
v0.31.2. That needs its ownissue.
Closes #272
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