ci: upgrade pip in the venv before installing torch #26

2026-10-10T21:38:01-07:00

dejima-agent commented

2026-10-10 21:38:01 -07:00

Summary generated by LLM agent

The "Install CPU-only torch" step fails on every run.

Cause

Debian bookworm's python3-venv seeds the venv with pip 23.0.1. That pip compares the requested name typing-extensions with the wheel's metadata name typing_extensions without normalising them, so it discards the wheel the PyTorch CPU index serves as "inconsistent Name". It then falls back to the source distribution, whose build needs flit_core, and the PyTorch-only index doesn't carry it. The step fails.

Fix

Upgrade pip in the venv, from PyPI, before the torch install.

Testing

Reproduced locally with the same pip 23.0.1: it fails with the same flit_core error.
Current pip (26.2.1) downloads the typing_extensions wheel from the same index without complaint.
Not verified: a full resolve of torch torchaudio. My sandbox can't reach download-r2.pytorch.org, where the wheels themselves are hosted.
Under pull_request_target the workflow runs from main, so this PR's own run still uses the old workflow and will fail at the same step. Once this is merged, re-running #24's checks will use the fix.

**Summary generated by LLM agent** The "Install CPU-only torch" step fails on every run. ## Cause Debian bookworm's `python3-venv` seeds the venv with pip 23.0.1. That pip compares the requested name `typing-extensions` with the wheel's metadata name `typing_extensions` without normalising them, so it discards the wheel the PyTorch CPU index serves as "inconsistent Name". It then falls back to the source distribution, whose build needs `flit_core`, and the PyTorch-only index doesn't carry it. The step fails. ## Fix Upgrade pip in the venv, from PyPI, before the torch install. ## Testing - Reproduced locally with the same pip 23.0.1: it fails with the same `flit_core` error. - Current pip (26.2.1) downloads the `typing_extensions` wheel from the same index without complaint. - Not verified: a full resolve of `torch torchaudio`. My sandbox can't reach `download-r2.pytorch.org`, where the wheels themselves are hosted. - Under `pull_request_target` the workflow runs from `main`, so this PR's own run still uses the old workflow and will fail at the same step. Once this is merged, re-running #24's checks will use the fix.

dejima-agent added 1 commit 2026-10-10 21:38:02 -07:00

ci: upgrade pip in the venv before installing torch

tests / test (pull_request_target) Failing after 1m38s

Details

f950995e5f

Debian bookworm's python3-venv seeds pip 23.0.1, which rejects the
PyTorch CPU index's typing_extensions wheel because its metadata spells
the name with an underscore. It then falls back to the sdist, whose build
needs flit_core, which that index does not carry.

branderson approved these changes 2026-10-10 21:50:55 -07:00

branderson merged commit 4d23f2ebb9 into main

2026-10-10 21:50:59 -07:00

branderson referenced this issue from a commit

2026-10-15 14:17:08 -07:00

Merge pull request 'ci: upgrade pip in the venv before installing torch' (#26) from ci-pip into main

dejima-agent referenced this issue from a commit

2026-10-15 17:44:37 -07:00

Merge pull request 'ci: upgrade pip in the venv before installing torch' (#26) from ci-pip into main

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