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feat(ci): Automate updating LKG commits for vllm and tpu-inference#1438

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fix-nightly-regression-lkg-6729321314769782857
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feat(ci): Automate updating LKG commits for vllm and tpu-inference#1438
sizhit2 wants to merge 3 commits intomainfrom
fix-nightly-regression-lkg-6729321314769782857

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@sizhit2 sizhit2 commented Apr 28, 2026

We introduced an automated mechanism inside the Tunix Nightly Regression Tests to capture the Last Known Good (LKG) commit hashes for the vllm and tpu-inference dependencies when the nightly tests succeed. It extracts the commit IDs straight from the installed metadata (so it gets exactly the commit embedded in the nightly Docker image) and creates a Pull Request updating requirements/requirements.txt and requirements/special_requirements.txt.


PR created automatically by Jules for task 6729321314769782857 started by @sizhit2

- Granted `contents: write` and `pull-requests: write` permissions in the caller workflow.
- Updated `.github/workflows/tpu-nightly-regression.yml` to extract exactly installed `vllm` and `tpu-inference` commits and automatically create a PR if those dependencies differ from the ones in the requirements files.

Co-authored-by: sizhit2 <32147610+sizhit2@users.noreply.github.com>
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Adds `run_latest` and `update_lkg_pr` jobs to the nightly regression workflow. It pulls the known LKG commit for `vllm` from `tpu-inference`'s upstream and the HEAD commit for `tpu-inference`, runs tests, and updates `requirements.txt` via PR. The `run_prod` job is kept untouched.

Co-authored-by: sizhit2 <32147610+sizhit2@users.noreply.github.com>
Moves test steps into a composite action and adds a job to update LKGs with git ls-remote and buildkite curl endpoint.

Co-authored-by: sizhit2 <32147610+sizhit2@users.noreply.github.com>
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