Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
In `v4.8.0-rc2`, due to additional build refactor changes, `JobM` no longer cleanly lifts in `FetchM`. Generally, a `JobM` action should not be run `FetchM` directly but spawned asynchronously as job (e.g., via `Job.async`). However, there may be some edge cases were this is necessary and it is a backwards compatibility break, so this change adds back the lift. This change also includes an `example` definition to ensure the lift works in order to prevent similar accidental breakages in the future. This breakage was first reported by Mario on [Zulip](https://leanprover.zulipchat.com/#narrow/stream/113488-general/topic/v4.2E8.2E0-rc2.20discussion/near/440407037). |
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| CONTRIBUTING.md | ||
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This is the repository for Lean 4.
About
- Quickstart
- Homepage
- Theorem Proving Tutorial
- Functional Programming in Lean
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- Release notes starting at v4.0.0-m3
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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).