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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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Kyle Miller e38c698392
refactor: use builtin command elaborators for configuration evaluation (#13779) 
This PR makes the command elaborators for configuration evaluation
metaprogramming be builtins, to avoid bootstrapping ABI issues in core
Lean due to the interpreter evaluating large parts of the elaborator
before all builtin initializers are run. (This is part 1; #13780 will be
applied after a stage0 update.)
2026-05-19 16:08:11 +00:00
.claude doc: add CLAUDE.md guidance on rebasing vs changing PR base (#13652) 2026-05-09 11:34:50 +00:00
.github chore: CI: fold Linux Lake into Linux release (#13759) 2026-05-18 22:52:22 +00:00
.vscode chore: fixes from #13103 "enable separate codegen" (#13241) 2026-04-02 11:13:22 +00:00
doc chore: adjust dev-release preset (#13741) 2026-05-16 05:32:16 +00:00
images
releases_drafts chore: remove stale release draft notes (#12518) 2026-02-17 19:56:23 +00:00
script chore: update release tooling and docs (#13631) 2026-05-04 15:33:36 +00:00
src refactor: use builtin command elaborators for configuration evaluation (#13779) 2026-05-19 16:08:11 +00:00
stage0 chore: update stage0 2026-05-15 09:14:30 +00:00
tests fix: instantiate metavariables when collecting a goal's constants (#13748) 2026-05-18 15:52:13 +00:00
.gitattributes chore: migrate more tests to new test suite (#12809) 2026-03-06 16:52:01 +00:00
.gitignore chore: update release tooling and docs (#13631) 2026-05-04 15:33:36 +00:00
.gitpod.Dockerfile chore: add gitpod configuration (#6382) 2024-12-15 21:38:13 +00:00
.gitpod.yml chore: strip binaries only in release builds (#13208) 2026-03-31 17:18:43 +00:00
.ignore chore: ignore stage0/ (for rg etc.) 2022-03-18 15:28:20 +01:00
AGENTS.md chore: add AGENTS.md symlink to CLAUDE.md (#13461) 2026-04-18 06:48:05 +00:00
CMakeLists.txt chore: use the lean-llvm LLVM for benchmarking (#13634) 2026-05-05 14:26:08 +00:00
CMakePresets.json chore: adjust dev-release preset (#13741) 2026-05-16 05:32:16 +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 chore: remove LICENSE header that confused GitHub 2021-11-18 09:42:35 +01:00
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.

About

Installation

See Install Lean.

Contributing

Please read our Contribution Guidelines first.

Building from Source

See Building Lean.