leanprover-community / leanprover-community/mathlib4

Porting note: `@[simp]` removed

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porting-notes
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Description

Classifies porting notes claiming anything semantically equivalent to:

  • "@[simp] removed [...]"
  • "@[simp] removed [...]"
  • "removed simp attribute"

Related to: #10618

Examples

https://github.com/leanprover-community/mathlib4/blob/e6232b7c39e75f2055cdcb4f2a49b7fe1467911a/Mathlib/Order/WellFounded.lean#L230-L234

https://github.com/leanprover-community/mathlib4/blob/e6232b7c39e75f2055cdcb4f2a49b7fe1467911a/Mathlib/Data/Prod/Basic.lean#L100-L104

https://github.com/leanprover-community/mathlib4/blob/e6232b7c39e75f2055cdcb4f2a49b7fe1467911a/Mathlib/Data/Multiset/Bind.lean#L222-L226

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 reading related issue #10618 and the examples in Mathlib/Order/WellFounded.lean, Mathlib/Data/Prod/Basic.lean, and Mathlib/Data/Multiset/Bind.lean. Identify the existing porting-note classification entry point and tests, then verify that notes expressing the listed removed-simp-attribute variants are classified correctly.

Written by the indexing model from the issue text.

Assessment

Domain
tooling
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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