Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
In the new snapshot design, we have a tree of `Task`s that represents the asynchronously processed document structure. When transforming this tree in response to a user edit, we want to quickly run through reusable, already computed nodes of the tree synchronously and then spawn new tasks for the new parts. The new flag allows us to do such mixed sync/async tree transformations uniformly. This flag exists as e.g. [`ExecuteSynchronously`](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.taskcontinuationoptions?view=net-8.0) in other runtimes. |
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| CONTRIBUTING.md | ||
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| lean-toolchain | ||
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This is the repository for Lean 4.
About
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See Setting Up Lean.
Contributing
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Building from Source
See Building Lean.