Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
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Lean stage0 autoupdater 63d1b530ba chore: update stage0
2026-01-23 18:35:59 +00:00
.claude chore: add CI log retrieval guidance to CLAUDE.md (#11964) 2026-01-10 07:41:41 +00:00
.github perf: avoid allocation on lean_trace use in interpreter (#12036) 2026-01-18 19:33:48 +00:00
doc doc: write a guideline for tactic docstrings (#11406) 2026-01-06 04:40:20 +00:00
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script chore: modulize: work around unknown initial command (#12080) 2026-01-21 20:25:13 +00:00
src chore: revert "fix: do not compile with -fwrapv" (#12125) 2026-01-23 17:39:52 +00:00
stage0 chore: update stage0 2026-01-23 18:35:59 +00:00
tests fix: getParentDeclName? inside where inside public def (#12119) 2026-01-23 17:32:05 +00:00
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This is the repository for Lean 4.

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Installation

See Install Lean.

Contributing

Please read our Contribution Guidelines first.

Building from Source

See Building Lean.