Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
cd62b8cd80
This PR changes how WF.Eqns unfolds the fixpoint. Instead of delta'ing until we have `fix`, and then blindly applying `fix_eq`, we delta one step less and preserve the function on the right hand side. This leads to smaller terms in the next step, so easier to debug, possibly faster, possibly more robust. |
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