Agda-2.3.2.2: test/fail/WithoutK9.agda
{-# OPTIONS --without-K --show-implicit #-}
module WithoutK9 where
module Eq {A : Set} (x : A) where
data _≡_ : A → Set where
refl : _≡_ x
open Eq
module Bad {A : Set} {x : A} where
module E = Eq x
weak-K : {y : A} (p q : E._≡_ y) (α β : p ≡ q) → α ≡ β
weak-K refl .refl refl refl = refl