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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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Sebastian Graf f2d36227cf
chore: rename mvcgen_invariant_type attribute to spec_invariant_type, part 1 (#13153) 
This PR registers the new `spec_invariant_type` attribute alongside the
old
`mvcgen_invariant_type`, renames internal identifiers, and replaces the
hardcoded `Invariant` check in `Spec.lean` with `isSpecInvariantType`.

A follow-up PR will switch all usages to `spec_invariant_type` and
remove
the old attribute after stage0 is updated.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-27 11:29:26 +00:00
.claude chore: speed up test suite slightly (#12969) 2026-03-20 12:24:32 +00:00
.github fix: rebootstrap cache in github CI (#13143) 2026-03-26 20:50:03 +00:00
.vscode chore: replace workspace file with .vscode/ settings (#12770) 2026-03-04 01:10:04 +00:00
doc feat: unfold and rewrap instances in inferInstanceAs and deriving 2026-03-22 13:25:46 +01:00
images
releases_drafts chore: remove stale release draft notes (#12518) 2026-02-17 19:56:23 +00:00
script chore: remove lean4checker from release repos (#13121) 2026-03-26 12:15:37 +00:00
src chore: rename mvcgen_invariant_type attribute to spec_invariant_type, part 1 (#13153) 2026-03-27 11:29:26 +00:00
stage0 chore: rename mvcgen_invariant_type attribute to spec_invariant_type, part 1 (#13153) 2026-03-27 11:29:26 +00:00
tests refactor: compile @[extern] via standard pipeline (#13102) 2026-03-27 10:31:22 +00:00
.gitattributes chore: migrate more tests to new test suite (#12809) 2026-03-06 16:52:01 +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: make leantar available in stage0 (#12992) 2026-03-19 20:43:43 +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 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.