Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
The `quot` type is now implemented in the kernel. We will do the same thing for inductives. We will not support normalizer extensions anymore in Lean4. It doesn't make sense since we settled with 2 extensions: quotients and inductives. Moreover, any new extension would require substantial changes (e.g., code generator). The normalizer_extension feature was useful when we were experimenting with different kernel flavors. |
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| bin | ||
| doc | ||
| extras/latex | ||
| gen | ||
| images | ||
| leanpkg | ||
| library | ||
| old_tests/tests | ||
| packages | ||
| script | ||
| src | ||
| tests | ||
| tmp | ||
| .appveyor.yml | ||
| .clang-format | ||
| .codecov.yml | ||
| .gitattributes | ||
| .gitignore | ||
| .travis.yml | ||
| LICENSE | ||
| README.md | ||
| License | Windows | Linux / macOS | Test Coverage | Chat |
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About
- Homepage
- Theorem Proving in Lean
- Core library
- Change Log
- FAQ
- For HoTT mode, please use Lean2.
Installation
Stable and nightly binary releases of Lean are available on the homepage. For building Lean from source, see the build instructions.
Miscellaneous
- Building Doxygen Documentation:
doxygen src/Doxyfile - Coding Style
- Library Style Conventions
- Git Commit Conventions
- Automatic Builds
- Syntax Highlight Lean Code in LaTeX
- Exporting, and reference type-checkers
