[ci:release] Integrate Python runtime release properly by elprans · Pull Request #15033 · vercel/vercel

elprans · 2026-02-12T19:17:20Z

Currently the vercel-runtime Python package gets pushed to PyPI after
all e2e and npm publishing was done via workflow dispatch to
release-python-runtime.yml. This is problematic because the Python
builder pins the runtime version exactly and would fail to find the
yet-unreleased package version on PyPI when running e2e tests.

A simple fix would be to publish to PyPI before e2e, but that defeats
the purpose of pre-release testing. Instead, here we follow the
JavaScript package procedure where we push artifacts to Vercel and test
on those. For Python this means that we inject VERCEL_RUNTIME_PYTHON
pointing to vercel-runtime @ ${{ dplUrl }}/tarballs/vercel-runtime.whl
alongside VERCEL_CLI_VERSION.

The remaining issue is to make sure that PyPI publication succeeds
before we proceed with the main CLI publication, otherwise we will
release a broken build. Achieve this by moving the PyPI publication step
into ci:publish so it runs before pnpm publish.

Specific changes:

Add python/vercel-runtime/publish.mjs (version check, build, smoke
test, publish)
Add utils/publish-runtimes.mjs which gets called from ci:publish
for dispatch (mostly just generalizing non-JS publication here).
Remove async workflow_dispatch trigger and push trigger from
release-python-runtime.yml (workflow_dispatch kept for now for
manual publication if we need it).
api/_lib/script/build.ts learns to scan and copy
python/**/dist/*.whl so they are accessible in pre-release e2e.

Warning

High Risk Change

This PR modifies CI/CD release workflows and publishing scripts to integrate Python runtime publication before npm publish, which is infrastructure/deployment configuration affecting the release process.

Modifies ci:publish script to run Python runtime publish before npm publish
Changes release workflow to add environment: release and Python setup steps
Adds new publish scripts for PyPI publication with version validation

^{Risk assessment for commit 478d73d.}

changeset-bot · 2026-02-12T19:17:27Z

🦋 Changeset detected

Latest commit: 478d73d

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@vercel/python-runtime	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

github-actions · 2026-02-12T19:19:07Z

📦 CLI Tarball Ready

The Vercel CLI tarball for this PR is now available!

Quick Test

You can test this PR's CLI directly by running:

npx https://vercel-ppgufls2o.vercel.sh/tarballs/vercel.tgz --help

Use in vercel.json

To use this CLI version in your project builds, add to your vercel.json:

{
  "build": {
    "env": {
      "VERCEL_CLI_VERSION": "vercel@https://vercel-ppgufls2o.vercel.sh/tarballs/vercel.tgz"
    }
  }
}

Python Runtime Wheel

A Python runtime wheel was also built for this PR.
To use in your Python project builds, also set this environment variable:

VERCEL_RUNTIME_PYTHON="vercel-runtime @ https://vercel-ppgufls2o.vercel.sh/tarballs/vercel_runtime-0.5.0.dev1771009293+478d73d-py3-none-any.whl"

github-actions · 2026-02-12T19:20:20Z

🧪 Unit Test Strategy

Comparing: 93697ea → 478d73d (view diff)

Strategy: Code changed outside of a package - running all unit tests

⚠️ All unit tests will run because global code changes could impact all packages.

Affected packages - 40 (100%)

@vercel-internals/get-package-json
@vercel/backends
@vercel/build-utils
@vercel/cervel
@vercel/cli-auth
@vercel/client
@vercel/config
@vercel/detect-agent
@vercel/edge
@vercel/elysia
@vercel/error-utils
@vercel/express
@vercel/fastify
@vercel/firewall
@vercel/frameworks
@vercel/fs-detectors
@vercel/functions
@vercel/gatsby-plugin-vercel-builder
@vercel/go
@vercel/h3
@vercel/hono
@vercel/hydrogen
@vercel/koa
@vercel/nestjs
@vercel/next
@vercel/node
@vercel/oidc
@vercel/oidc-aws-credentials-provider
@vercel/python
@vercel/python-analysis
@vercel/redwood
@vercel/related-projects
@vercel/remix-builder
@vercel/routing-utils
@vercel/ruby
@vercel/rust
@vercel/static-build
@vercel/static-config
examples
vercel

Results

Unit tests: All affected packages will run unit tests
E2E tests: Running in parallel via E2E Tests workflow
Type checks: All affected packages will run type checks

This comment is automatically generated based on the affected testing strategy

.github/workflows/test-e2e.yml

.github/workflows/comment-cli-tarball.yml

.github/workflows/release-python-runtime.yml

Currently the vercel-runtime Python package gets pushed to PyPI _after_ all e2e and npm publishing was done via workflow dispatch to `release-python-runtime.yml`. This is problematic because the Python builder pins the runtime version _exactly_ and would fail to find the yet-unreleased package version on PyPI when running e2e tests. A simple fix would be to publish to PyPI before e2e, but that defeats the purpose of pre-release testing. Instead, here we follow the JavaScript package procedure where we push artifacts to Vercel and test on those. For Python this means that we inject `VERCEL_RUNTIME_PYTHON` pointing to `vercel-runtime @ ${{ dplUrl }}/tarballs/vercel-runtime.whl` alongside `VERCEL_CLI_VERSION`. The remaining issue is to make sure that PyPI publication succeeds _before_ we proceed with the main CLI publication, otherwise we will release a broken build. Achieve this by moving the PyPI publication step into `ci:publish` so it runs before `pnpm publish`. Specific changes: - Add `python/vercel-runtime/publish.mjs` (version check, build, smoke test, publish) - Add `utils/publish-runtimes.mjs` which gets called from `ci:publish` for dispatch (mostly just generalizing non-JS publication here). - Remove async `workflow_dispatch` trigger and `push` trigger from `release-python-runtime.yml` (`workflow_dispatch` kept for now for manual publication if we need it). - `api/_lib/script/build.ts` learns to scan and copy `python/**/dist/*.whl` so they are accessible in pre-release e2e. - tarball comment amended to include `VERCEL_RUNTIME_PYTHON` if Python runtime changed since last release.

This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and publish to npm yourself or [setup this action to publish automatically](https://github.com/changesets/action#with-publishing). If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## vercel@50.18.0 ### Minor Changes - Support easier auth from cursor / claude ([#15050](#15050)) ### Patch Changes - non-interactive mode for link ([#14884](#14884)) - Add experimental manual deployment support ([#14857](#14857)) - Fix `integration remove`, `integration balance`, and `integration open` commands failing to find integrations by explicitly passing `teamId` to the configurations API ([#15054](#15054)) - Require slash syntax for multi-product integrations in non-TTY mode, keep interactive product selector for TTY ([#15047](#15047)) - Move builders back into bundle ([#15059](#15059)) - Updated dependencies \[[`463395162462988e7d3276781d2fdff0685e225b`](4633951), [`6e58410ff849c281735c6acae59b3b0e86136f15`](6e58410)]: - @vercel/go@3.4.1 - @vercel/ruby@2.3.1 - @vercel/python@6.13.0 - @vercel/static-build@2.8.37 ## @vercel/python@6.13.0 ### Minor Changes - Add runtime dependency install to support larger Python functions ([#14976](#14976)) This adds logic to calculate the total size of a lambda at build time and offload dependencies to a \_runtime_requirements.txt file so they can be installed at runtime by uv. This allows us to deploy functions up to the total size of the /tmp folder. ## @vercel/client@17.2.42 ### Patch Changes - Add experimental manual deployment support ([#14857](#14857)) ## @vercel/fs-detectors@5.8.7 ### Patch Changes - [services] infer workspace from manifest: when workspace is not explicitly configured, infer from nearest manifest to entrypoint ([#14986](#14986)) ## @vercel/go@3.4.1 ### Patch Changes - Forward Go and Ruby dev server output through `startDevServer` stdout/stderr callbacks so service logs are correctly prefixed in multi-service `vercel dev`. ([#14989](#14989)) ## @vercel/ruby@2.3.1 ### Patch Changes - Forward Go and Ruby dev server output through `startDevServer` stdout/stderr callbacks so service logs are correctly prefixed in multi-service `vercel dev`. ([#14989](#14989)) ## @vercel/python-runtime@0.4.1 ### Patch Changes - fix PyPI publication integration in release flow ([#15033](#15033)) Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

elprans requested review from a team and ijjk as code owners February 12, 2026 19:17

vercel bot deployed to Preview February 12, 2026 19:19 View deployment

elprans requested review from jeffsee55 and tknickman February 12, 2026 19:21

vercel bot deployed to Preview February 12, 2026 19:21 View deployment

vercel bot deployed to Preview February 12, 2026 19:28 View deployment

vercel bot deployed to Preview February 12, 2026 20:44 View deployment

vercel bot deployed to Preview February 12, 2026 20:58 View deployment

vercel bot deployed to Preview February 12, 2026 21:44 View deployment

elprans force-pushed the elprans/integrate-python-runtime-publication-better branch from eac3994 to d6cb351 Compare February 12, 2026 21:49

vercel bot deployed to Preview February 12, 2026 21:51 View deployment

vercel bot reviewed Feb 12, 2026

View reviewed changes

.github/workflows/test-e2e.yml Outdated Show resolved Hide resolved

vercel bot deployed to Preview February 12, 2026 21:55 View deployment

vercel bot deployed to Preview February 12, 2026 22:17 View deployment

vercel bot reviewed Feb 12, 2026

View reviewed changes

.github/workflows/comment-cli-tarball.yml Outdated Show resolved Hide resolved

vercel bot deployed to Preview February 12, 2026 22:24 View deployment

vercel bot deployed to Preview February 12, 2026 22:27 View deployment

vercel bot deployed to Preview February 12, 2026 22:57 View deployment

gscho reviewed Feb 12, 2026

View reviewed changes

.github/workflows/release-python-runtime.yml Show resolved Hide resolved

vercel bot deployed to Preview February 12, 2026 23:35 View deployment

gscho approved these changes Feb 12, 2026

View reviewed changes

elprans force-pushed the elprans/integrate-python-runtime-publication-better branch from 2ced398 to 478d73d Compare February 13, 2026 19:01

vercel bot deployed to Preview February 13, 2026 19:03 View deployment

jeffsee55 approved these changes Feb 13, 2026

View reviewed changes

elprans enabled auto-merge (squash) February 13, 2026 19:39

elprans merged commit 331328d into main Feb 13, 2026
526 of 534 checks passed

elprans deleted the elprans/integrate-python-runtime-publication-better branch February 13, 2026 20:03

vercel-release-bot mentioned this pull request Feb 13, 2026

Version Packages #15051

Merged

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

[ci:release] Integrate Python runtime release properly#15033

[ci:release] Integrate Python runtime release properly#15033
elprans merged 1 commit intomainfrom
elprans/integrate-python-runtime-publication-better

elprans commented Feb 12, 2026 •

edited by vercel bot

Loading

Uh oh!

changeset-bot bot commented Feb 12, 2026 •

edited

Loading

Uh oh!

github-actions bot commented Feb 12, 2026 •

edited

Loading

Uh oh!

github-actions bot commented Feb 12, 2026 •

edited

Loading

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

Conversation

elprans commented Feb 12, 2026 • edited by vercel bot Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

changeset-bot bot commented Feb 12, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

🦋 Changeset detected

Uh oh!

github-actions bot commented Feb 12, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

📦 CLI Tarball Ready

Quick Test

Use in vercel.json

Python Runtime Wheel

Uh oh!

github-actions bot commented Feb 12, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

🧪 Unit Test Strategy

Results

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

elprans commented Feb 12, 2026 •

edited by vercel bot

Loading

changeset-bot bot commented Feb 12, 2026 •

edited

Loading

github-actions bot commented Feb 12, 2026 •

edited

Loading

github-actions bot commented Feb 12, 2026 •

edited

Loading