From aa38aec2400eaf8f2c786570cdae193817ca8505 Mon Sep 17 00:00:00 2001
From: Adam Bergmark <adam@bergmark.nl>
Date: Wed, 15 Jul 2015 17:32:41 +0200
Subject: [PATCH] Upper bound for #684

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 476fe63d..0fb28982 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1209,6 +1209,9 @@ packages:
         # https://github.com/fpco/stackage/issues/682
         - vector < 0.11
 
+        # https://github.com/fpco/stackage/issues/684
+        - cmark < 0.4
+
 # Package flags are applied to individual packages, and override the values of
 # global-flags
 package-flags: