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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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Mac Malone 4384344465
feat: lake: use trace mtime for arts when possible (#12799) 
This PR changes Lake to use the modification times of traces (where
available) for artifact modification times.

When artifacts are hard-linked from the cache, they retain the
modification time of the artifact in the cache. Thus, the artifact
modification time is an unreliable metric for determining whether an
artifact is up-to-date relative to other artifacts in the presence of
the cache. The trace file, however, is modified consistently when the
artifacts are updated, making it the most reliable indicator of
modification time.
2026-03-05 04:53:59 +00:00
.claude chore: improve CI failure reporting in release checklist (#12786) 2026-03-04 11:55:34 +00:00
.github fix: use pull_request_target for label-triggered workflows (#12638) 2026-03-01 19:20:56 +11:00
.vscode chore: replace workspace file with .vscode/ settings (#12770) 2026-03-04 01:10:04 +00:00
doc chore: replace workspace file with .vscode/ settings (#12770) 2026-03-04 01:10:04 +00:00
images chore(CMakeLists.txt): move Lean logo to make sure we can test leanemacs without installing Lean 2015-01-31 17:38:49 -08:00
releases_drafts chore: remove stale release draft notes (#12518) 2026-02-17 19:56:23 +00:00
script fix: handle CACHE STRING syntax in LEAN_VERSION_IS_RELEASE check (#12800) 2026-03-05 02:09:51 +00:00
src feat: lake: use trace mtime for arts when possible (#12799) 2026-03-05 04:53:59 +00:00
stage0 chore: update stage0 2026-03-04 16:32:35 +00:00
tests feat: add cbv.maxSteps option to control step limit (#12788) 2026-03-04 16:05:57 +00:00
.gitattributes doc: grove: update and add String data (#11551) 2025-12-08 16:49:37 +00:00
.gitignore chore: replace workspace file with .vscode/ settings (#12770) 2026-03-04 01:10:04 +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: fail build on non-make generators (#12690) 2026-02-25 13:59:40 +00:00
CMakePresets.json chore: fix ci for new test suite (#12704) 2026-02-27 23:25:37 +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: update to c++20 (#12117) 2026-02-11 01:17:40 +00:00
flake.nix chore: update to c++20 (#12117) 2026-02-11 01:17:40 +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: 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.

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Contributing

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Building from Source

See Building Lean.