From 3f8694322e78f429120652425e22e73f4d90e30f Mon Sep 17 00:00:00 2001
From: Seth Tisue <seth@tisue.net>
Date: Tue, 27 Sep 2016 18:01:29 -0700
Subject: [PATCH] be 2.12.0-RC1 compatible

reference: https://github.com/typelevel/cats/issues/1377
---
 core/src/main/scala/cats/Eval.scala | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/core/src/main/scala/cats/Eval.scala b/core/src/main/scala/cats/Eval.scala
index 36348160fea..f6440c22979 100644
--- a/core/src/main/scala/cats/Eval.scala
+++ b/core/src/main/scala/cats/Eval.scala
@@ -74,8 +74,8 @@ sealed abstract class Eval[+A] extends Serializable { self =>
       case c: Eval.Compute[A] =>
         new Eval.Compute[B] {
           type Start = c.Start
-          val start = c.start
-          val run = (s: c.Start) =>
+          val start: () => Eval[Start] = c.start
+          val run: Start => Eval[B] = (s: c.Start) =>
             new Eval.Compute[B] {
               type Start = A
               val start = () => c.run(s)