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Eq[NonEmptySet[A]] now needs Eq[A], not Order[A] #3958

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Aug 6, 2021
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5 changes: 4 additions & 1 deletion core/src/main/scala/cats/data/NonEmptySet.scala
Original file line number Diff line number Diff line change
Expand Up @@ -410,7 +410,10 @@ sealed abstract private[data] class NonEmptySetInstances0 extends NonEmptySetIns
}

sealed abstract private[data] class NonEmptySetInstances1 {
implicit def catsDataEqForNonEmptySet[A](implicit A: Order[A]): Eq[NonEmptySet[A]] =
private[data] def catsDataEqForNonEmptySet[A](implicit A: Order[A]): Eq[NonEmptySet[A]] =
catsDataEqForNonEmptySetFromEqA[A]

implicit def catsDataEqForNonEmptySetFromEqA[A](implicit A: Eq[A]): Eq[NonEmptySet[A]] =
new NonEmptySetEq[A] {
implicit override def A0: Eq[A] = A
}
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