Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
Find a file
Henrik Böving 1884c3b2ed
feat: make mimalloc security options available (#13401)
This PR adds the option `LEAN_MI_SECURE` to our CMake build. It can be
configured with values `0`
through `4`. Every increment enables additional memory safety
mitigations in mimalloc, at the cost
of 2%-20% instruction count, depending on the benchmark. The option is
disabled by default in our
release builds as most of our users do not use the Lean runtime in
security sensitive situations.
Distributors and organization deploying production Lean code should
consider enabling the option as
a hardening measure. The effects of the various levels can be found at
https://github.com/microsoft/mimalloc/blob/v2.2.7/include/mimalloc/types.h#L56-L60.
2026-04-14 13:22:07 +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 feat: make mimalloc security options available (#13401) 2026-04-14 13:22:07 +00:00
stage0 chore: update stage0 2026-04-13 19:08:51 +00:00
tests fix: deriving Inhabited for structures should inherit Inhabited instances (#13395) 2026-04-14 02:46:07 +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 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
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 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

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.