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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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Julia Markus Himmel ba502f7027
chore: rename UInt8.ofNatTruncate to UInt8.ofNatClamp (#13627) 
This PR renames `UInt8.ofNatTruncate` to `UInt8.ofNatClamp`.

The new name is more consistent with the rest of the library (e.g.,
`Int8.toNatClampNeg`) and also more clear. See also [#lean4 > Name of
UInt32.ofNatTruncate etc may be
wrong](https://leanprover.zulipchat.com/#narrow/channel/270676-lean4/topic/Name.20of.20UInt32.2EofNatTruncate.20etc.20may.20be.20wrong/with/591873604).

Historical note: during prehistoric times (in January 2024),
`UInt32.ofNatTruncate` (only the 32 bit version) was introduced for use
in the `simp` configuration. When I looked at the `UIntX` API more
properly later, I added the missing variants but didn't reconsider the
name.
2026-05-04 11:02:10 +00:00
.claude chore: refine PR description guidance in .claude/CLAUDE.md (#13597) 2026-05-02 12:02:25 +00:00
.github chore: remove namespace repo caching logic (#13539) 2026-04-27 15:14:03 +00:00
.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 feat: script for finding deprecated options, modules and syntax (#13586) 2026-04-30 17:30:43 +00:00
src chore: rename UInt8.ofNatTruncate to UInt8.ofNatClamp (#13627) 2026-05-04 11:02:10 +00:00
stage0 chore: update stage0 2026-04-27 11:06:16 +00:00
tests fix: lake: meta import transitive import artifacts (#13600) 2026-05-03 17:44:46 +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
AGENTS.md chore: add AGENTS.md symlink to CLAUDE.md (#13461) 2026-04-18 06:48:05 +00:00
CMakeLists.txt fix: leantar architecture detection for Linux aarch64 (#13499) 2026-04-22 05:20:59 +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

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.