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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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Wojciech Różowski fe77e4d2d1
fix: coinductive syntax causing panic in macro scopes (#13420) 
This PR fixes a panic when `coinductive` predicates are defined inside
macro scopes where constructor names carry macro scopes. The existing
guard only checked the declaration name for macro scopes, missing the
case where constructor identifiers are generated inside a macro
quotation and thus carry macro scopes. This caused
`removeFunctorPostfixInCtor` to panic on `Name.num` components from
macro scope encoding.

Closes #13415
2026-04-15 18:50:31 +00:00
.claude chore: remove module build instructions from CLAUDE.md (#13386) 2026-04-13 10:08:33 +00:00
.github chore: CI: ignore compile_bench/channel in Linux Reldebug 2026-04-11 13:16:12 +02:00
.vscode chore: fixes from #13103 "enable separate codegen" (#13241) 2026-04-02 11:13:22 +00:00
doc chore: strip binaries only in release builds (#13208) 2026-03-31 17:18:43 +00:00
images
releases_drafts chore: remove stale release draft notes (#12518) 2026-02-17 19:56:23 +00:00
script fix: skip nightly-testing merge when branch does not exist (#13308) 2026-04-08 00:31:22 +00:00
src fix: coinductive syntax causing panic in macro scopes (#13420) 2026-04-15 18:50:31 +00:00
stage0 chore: update stage0 2026-04-15 10:55:52 +00:00
tests fix: coinductive syntax causing panic in macro scopes (#13420) 2026-04-15 18:50:31 +00:00
.gitattributes chore: migrate more tests to new test suite (#12809) 2026-03-06 16:52:01 +00:00
.gitignore chore: git ignore .claude/worktrees (#13299) 2026-04-07 09:51:39 +00:00
.gitpod.Dockerfile
.gitpod.yml chore: strip binaries only in release builds (#13208) 2026-03-31 17:18:43 +00:00
.ignore
CMakeLists.txt chore: don't waste time building CMake mimalloc that we don't use (#13402) 2026-04-14 09:49:31 +00:00
CMakePresets.json chore: strip binaries only in release builds (#13208) 2026-03-31 17:18:43 +00:00
CODEOWNERS chore: make @hargoniX code owner of the compiler (#10732) 2025-10-10 04:43:38 +00:00
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 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.

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Installation

See Install Lean.

Contributing

Please read our Contribution Guidelines first.

Building from Source

See Building Lean.