actions / actions/cache

Fails to cache in certain environments on windows 2019

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Dominant language
TypeScript
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Description

On windows this action doesn't work under all circumstances.
One such instance is the following github action(run): https://github.com/duckdb-faiss-ext/duckdb-faiss-ext/actions/runs/11274103433/job/31494248160

The environment is windows 2019, with rtools42 and using ccache as a C compiler.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by examining the linked GitHub Actions run for Windows 2019 with rtools42 and ccache, including its cache-related logs. Compare the action's behavior in that environment with a working environment and identify the missing reproduction details. Done means the cache works reliably for the reported setup and the behavior is covered by an appropriate regression check.

Written by the indexing model from the issue text.

Assessment

Tech stack
github-actions, typescript
Domain
ci-cd, tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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