From e64c6dc6af604fd2f0a963676876b29becbbb696 Mon Sep 17 00:00:00 2001
From: Michael Snoyman <michael@snoyman.com>
Date: Sun, 31 May 2015 19:22:05 +0300
Subject: [PATCH] Upper bound for #615

---
 build-constraints.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 578603be..04971712 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1066,6 +1066,9 @@ packages:
         # https://github.com/fpco/stackage/issues/610
         - either < 4.4
 
+        # https://github.com/fpco/stackage/issues/615
+        - syb < 0.5
+
 # Package flags are applied to individual packages, and override the values of
 # global-flags
 package-flags: