Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
0d2a574f96
This PR implements user-defined `grind` attributes. They are useful for users that want to implement tactics using the `grind` infrastructure (e.g., `progress*` in Aeneas). New `grind` attributes are declared using the command ```lean register_grind_attr my_grind ``` The command is similar to `register_simp_attr`. After the new attribute is declared. Recall that similar to `register_simp_attr`, the new attribute cannot be used in the same file it is declared. ```lean opaque f : Nat → Nat opaque g : Nat → Nat @[my_grind] theorem fax : f (f x) = f x := sorry example theorem fax2 : f (f (f x)) = f x := by fail_if_success grind grind [my_grind] ``` TODO: remove leftovers after update stage0 |
||
|---|---|---|
| .claude | ||
| .github | ||
| doc | ||
| images | ||
| releases_drafts | ||
| script | ||
| src | ||
| stage0 | ||
| tests | ||
| .gitattributes | ||
| .gitignore | ||
| .gitpod.Dockerfile | ||
| .gitpod.yml | ||
| .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
- Documentation Overview
- Language Reference
- Release notes starting at v4.0.0-m3
- Examples
- External Contribution Guidelines
Installation
See Install Lean.
Contributing
Please read our Contribution Guidelines first.
Building from Source
See Building Lean.