Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
d3eca9fa35
We need this improvement to be able to finish Section "Other goodies" described at https://github.com/leanprover/lean/wiki/Refactoring-structures Before this commit, Lean would not be able to solve constraints such as ```lean @has_add.add nat nat.has_add a b =?= @had_add.add ?A ?inst a b ``` The problem is that projections were being reduced eagerly, and the constraint would be reduced to ```lean nat.add a b =?= @had_add.add ?A ?inst a b ``` The new test proj_uniy.lean contains similar unification problems. |
||
|---|---|---|
| bin | ||
| doc | ||
| extras | ||
| images | ||
| library | ||
| old_library | ||
| script | ||
| src | ||
| tests | ||
| tmp | ||
| .appveyor.yml | ||
| .appveyor.yml.in | ||
| .clang-format | ||
| .codecov.yml | ||
| .gitignore | ||
| .travis.yml | ||
| .travis.yml.in | ||
| LICENSE | ||
| README.md | ||
| License | Windows | Linux / macOS | Test Coverage | Chat |
|---|---|---|---|---|
 |
 |
 |
 |
About
- Homepage
- Theorem Proving in Lean
- Standard Library
- Emacs Mode
- For HoTT mode, please use Lean2.
Requirements
- C++11 compatible compiler
- CMake
- GMP (GNU multiprecision library)
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