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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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Eric Wieser 25c71d91aa
feat: add rfl lemmas about ExceptCpsT.runK (#12912) 
This PR adds trivial lemmas about `ExceptCpsT.runK` to match the
existing lemmas about `.run`.
2026-03-26 08:13:20 +00:00
.claude chore: speed up test suite slightly (#12969) 2026-03-20 12:24:32 +00:00
.github fix: handle duplicate nightly tag in scheduled CI runs (#13114) 2026-03-25 01:10:54 +00:00
.vscode chore: replace workspace file with .vscode/ settings (#12770) 2026-03-04 01:10:04 +00:00
doc feat: unfold and rewrap instances in inferInstanceAs and deriving 2026-03-22 13:25:46 +01:00
images
releases_drafts chore: remove stale release draft notes (#12518) 2026-02-17 19:56:23 +00:00
script fix: handle lean4-nightly toolchain prefix in release checklist (#12865) 2026-03-23 03:01:58 +00:00
src feat: add rfl lemmas about ExceptCpsT.runK (#12912) 2026-03-26 08:13:20 +00:00
stage0 chore: update stage0 2026-03-25 15:45:01 +00:00
tests refactor: move issue tracker from grind to SymM (#13125) 2026-03-26 02:27:27 +00:00
.gitattributes chore: migrate more tests to new test suite (#12809) 2026-03-06 16:52:01 +00:00
.gitignore chore: replace workspace file with .vscode/ settings (#12770) 2026-03-04 01:10:04 +00:00
.gitpod.Dockerfile
.gitpod.yml
.ignore
CMakeLists.txt chore: make leantar available in stage0 (#12992) 2026-03-19 20:43:43 +00:00
CMakePresets.json chore: fix ci for new test suite (#12704) 2026-02-27 23:25:37 +00:00
CODEOWNERS
CONTRIBUTING.md chore: migrate pkg tests (#12889) 2026-03-11 18:55:46 +00:00
flake.lock chore: update to c++20 (#12117) 2026-02-11 01:17:40 +00:00
flake.nix chore: add aarch64-darwin to flake (#12915) 2026-03-18 15:55:34 +00:00
lean-toolchain chore: relative lean-toolchains (#12652) 2026-02-25 10:23:35 +00:00
LICENSE
LICENSES feat: bundle leantar with Lean (#12822) 2026-03-09 20:10:59 +00:00
README.md
RELEASES.md

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.