From 3f705563ede6581f5b9dee1fd628cdaa125750db Mon Sep 17 00:00:00 2001
From: Jens Petersen <juhpetersen@gmail.com>
Date: Wed, 11 Nov 2015 11:28:48 +0900
Subject: [PATCH] constraints-0.6 breaks lifted-async

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index e7553487..7e91fbc4 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1711,6 +1711,9 @@ packages:
         # https://github.com/fpco/stackage/issues/968
         - bifunctors < 5.1
 
+        # https://github.com/fpco/stackage/issues/973
+        - constraints < 0.6
+
 # end of packages