definitions generated by `deriving DecideableEq` or `deriving Repr` trigger the Batteries unused arguments linter
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bug
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- Dominant language
- Lean
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Description
See for example Mathlib/CategoryTheory/Limits/Shapes/WidePullbacks.lean
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
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- Fork the repository and make your change on a branch.
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Research direction
Start with Mathlib/CategoryTheory/Limits/Shapes/WidePullbacks.lean and reproduce the Batteries unused arguments linter warnings for definitions generated by deriving DecideableEq or deriving Repr. Trace whether the issue belongs to generated-definition handling or linter behavior; done means the reported generated definitions no longer trigger incorrect warnings.
Written by the indexing model from the issue text.
Assessment
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100