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Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
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Leonardo de Moura 46ff76aabd
feat: #grind_lint refinements (#11166) 
This PR implements the following improvements to the `#grind_lint`
command:
1. More informative messages when the number of instances exceeds the
minimum threshold.
2. A code action for `#grind_lint inspect` that inserts
`set_option trace.grind.ematch.instance true` whenever the number of
instances exceeds
   the minimum threshold.
3. Displaying doc strings for `grind` configuration options in
`#grind_lint`.
4. Improve doc strings for `#grind_lint inspect` and `#grind_lint
check`.

Example:
```lean
/--
info: instantiating `Array.filterMap_some` triggers more than 100 additional `grind` theorem instantiations
---
info: Array.filterMap_some
[thm] instances
  [thm] Array.filterMap_filterMap ↦ 94
  [thm] Array.size_filterMap_le ↦ 5
  [thm] Array.filterMap_some ↦ 1
---
info: Try this to display the actual theorem instances:
  [apply] set_option trace.grind.ematch.instance true in
  #grind_lint inspect Array.filterMap_some
-/
#guard_msgs in
#grind_lint inspect Array.filterMap_some
```
2025-11-13 20:36:01 +00:00
.claude chore: basic dev instructions for Claude (#11074) 2025-11-04 04:07:53 +00:00
.github chore: CI: bump actions/upload-artifact from 4 to 5 (#11052) 2025-11-11 12:41:14 +00:00
doc feat: String.toList_map (#11021) 2025-11-01 13:54:39 +00:00
images
releases_drafts chore: updates to release_checklist.md (#7817) 2025-04-04 03:45:36 +00:00
script feat: #grind_lint command (#11157) 2025-11-13 00:42:18 +00:00
src feat: #grind_lint refinements (#11166) 2025-11-13 20:36:01 +00:00
stage0 chore: update stage0 2025-11-13 02:05:09 +00:00
tests feat: #grind_lint refinements (#11166) 2025-11-13 20:36:01 +00:00
.gitattributes fix: mark doc parser tests as eol=lf (#10344) 2025-09-11 11:19:01 +00:00
.gitignore chore: add .vscode/settings.json to .gitignore (#10795) 2025-10-16 07:08:41 +00:00
.gitpod.Dockerfile chore: add gitpod configuration (#6382) 2024-12-15 21:38:13 +00:00
.gitpod.yml chore: add gitpod configuration (#6382) 2024-12-15 21:38:13 +00:00
.ignore chore: ignore stage0/ (for rg etc.) 2022-03-18 15:28:20 +01:00
CMakeLists.txt chore: make USE_LAKE the default (#10016) 2025-08-21 11:43:25 +00:00
CMakePresets.json chore: fix reldebug preset (#8051) 2025-04-23 10:05:11 +00:00
CODEOWNERS chore: make @hargoniX code owner of the compiler (#10732) 2025-10-10 04:43:38 +00:00
CONTRIBUTING.md doc: triage 2024-07-26 18:24:06 +02:00
flake.lock chore: robustify Nix shell (#8141) 2025-04-28 15:08:32 +00:00
flake.nix chore: use lld if available for building core (#10694) 2025-10-08 16:47:30 +00:00
lean-toolchain doc: VS Code dev setup (#2961) 2023-11-30 08:35:03 +00:00
lean.code-workspace chore: lean.code-workspace: fix terminal cwd (#10802) 2025-10-16 20:19:12 +00:00
LICENSE chore: remove LICENSE header that confused GitHub 2021-11-18 09:42:35 +01:00
LICENSES feat: ship cadical (#4325) 2024-08-23 09:13:27 +00:00
README.md doc: update URLs that are currently pointing to redirects (#10397) 2025-09-17 15:50:07 +00:00
RELEASES.md chore: updates to release_checklist.md (#7817) 2025-04-04 03:45:36 +00:00

README.md

This is the repository for Lean 4.

About

Installation

See Install Lean.

Contributing

Please read our Contribution Guidelines first.

Building from Source

See Building Lean.