Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
Now it suggests using `@[ext (iff := false)]` to disable generating the `ext_iff` lemma. This PR also adjusts error messages and attribute documentation. Additionally, to simplify the code now the `x` and `y` arguments can't come in reverse order (this feature was was added in the refactor #4543). Closes #4758 |
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