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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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Henrik Böving 3dd99fc29c
perf: eta contract instead of lambda lifting if possible (#11451) 
This PR adapts the lambda lifter in LCNF to eta contract instead of
lambda lift if possible. This prevents the creation of a few hundred
unnecessary lambdas across the code base.
2025-12-02 08:39:24 +00:00
.claude chore: update Claude prompting (#11370) 2025-11-26 02:53:36 +00:00
.github chore: CI: exclude additional slow test (#11440) 2025-12-01 10:53:16 +00:00
doc doc: clarify how to trigger automatic stage0 updates (#11413) 2025-11-28 12:56:59 +00:00
images
releases_drafts chore: add release draft for the module system (#11359) 2025-11-26 15:01:07 +00:00
script chore: CI: fix Linux release jobs (#11424) 2025-11-28 16:27:32 +00:00
src perf: eta contract instead of lambda lifting if possible (#11451) 2025-12-02 08:39:24 +00:00
stage0 chore: update stage0 2025-12-01 21:07:38 +00:00
tests perf: eta contract instead of lambda lifting if possible (#11451) 2025-12-02 08:39:24 +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: CI: enable leak sanitizer again (#11339) 2025-11-27 18:32:35 +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.