leanprover / leanprover/lean4

`lake --wfail` does not fail on configuration warnings

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bug Lake P-medium
Dominant language
Lean
Stars
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Forks
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Avg merge
1d 17h
Merged PRs (30d)
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Description

lake --wfail does not fail on configuration warnings and workspace load warnings, but should. See zulip discussion for an example.

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 reproducing the reported case with lake --wfail, focusing on configuration warnings and workspace load warnings. Trace the warning handling from the Lake command entry point and compare it with warnings that already cause failure; done means both warning categories make the command fail when --wfail is enabled.

Written by the indexing model from the issue text.

Assessment

Domain
build-system, cli
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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