From eac93bd52c33d20a7508ceef65e68a8d655afb8a Mon Sep 17 00:00:00 2001
From: Michael Snoyman <michael@snoyman.com>
Date: Fri, 26 Jun 2015 08:05:37 +0300
Subject: [PATCH] Upper bound for #646

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index ff1e7d30..7c18857a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1126,6 +1126,9 @@ packages:
         # https://github.com/rodrigosetti/messagepack-rpc/issues/2
         - messagepack < 0.4
 
+        # https://github.com/fpco/stackage/issues/646
+        - clock < 0.5
+
 # Package flags are applied to individual packages, and override the values of
 # global-flags
 package-flags: