@buggymcbugfix writes:
The fix for this issue (#7122) does not resolve the regression in the case of rewrite:
open import Agda.Builtin.Equality
record Semiring : Set₁ where
field
Carrier : Set
one : Carrier
mul : Carrier → Carrier → Carrier
left-unit : (r : Carrier) → mul one r ≡ r
open Semiring {{...}}
foo : {{R : Semiring}} (r : Carrier) → mul one r ≡ r
foo r rewrite left-unit r = refl
Error:
Semiring.mul R (Semiring.one R) r != r of type Semiring.Carrier R
when checking that the expression refl has type
Semiring.mul R (Semiring.one R) r ≡ r
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