Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
Switches the manifest format to use `major.minor.patch` semantic versions. Major version increments indicate breaking changes (e.g., new required fields and semantic changes to existing fields). Minor version increments (after `0.x`) indicate backwards-compatible extensions (e.g., adding optional fields, removing fields). This change is backwards compatible. Lake will still successfully read old manifest with numeric versions. It will treat the numeric version `N` as semantic version `0.N.0`. Lake will also accept manifest versions with `-` suffixes (e.g., `x.y.z-foo`) and then ignore the suffix. This change also includes the general cleanup/refactoring of the manifest code and data structures that was part of #3174. |
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| .github | ||
| doc | ||
| images | ||
| nix | ||
| releases_drafts | ||
| script | ||
| src | ||
| stage0 | ||
| tests | ||
| .gitattributes | ||
| .gitignore | ||
| .ignore | ||
| CMakeLists.txt | ||
| CMakePresets.json | ||
| CODEOWNERS | ||
| CONTRIBUTING.md | ||
| flake.lock | ||
| flake.nix | ||
| lean-toolchain | ||
| lean.code-workspace | ||
| LICENSE | ||
| LICENSES | ||
| README.md | ||
| RELEASES.md | ||
This is the repository for Lean 4.
About
- Quickstart
- Homepage
- Theorem Proving Tutorial
- Functional Programming in Lean
- Manual
- Release notes starting at v4.0.0-m3
- Examples
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Installation
See Setting Up Lean.
Contributing
Please read our Contribution Guidelines first.
Building from Source
See Building Lean (documentation source: doc/make/index.md).