16 lines
551 B
Text
16 lines
551 B
Text
/-
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Courtesy of @rwbarton.
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This is just a bug report, but since we are going to soon rewrite the entire module in Lean4,
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we don't want to bother fixing the C++ bug, and we don't want to add a failing test either.
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The issue is that collecting implicit locals does not collect additional universe parameters
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the locals depend on.
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-/
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universes v u
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class Category (C : Type u) :=
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(Hom : ∀ (X Y : C), Type v)
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variables {C : Type u} [Category.{v, u} C]
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def End (X : C) := Category.Hom X X -- invalid reference to undefined universe level parameter 'v'
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