From 2130493568eccce77262a681c5ed9d1c765fde62 Mon Sep 17 00:00:00 2001
From: Michael Snoyman <michael@snoyman.com>
Date: Thu, 17 Sep 2015 03:09:41 +0300
Subject: [PATCH] Upper bound for #836

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8c116c78..449b6e0e 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1464,6 +1464,9 @@ packages:
         - linear < 1.20
         - reflection < 2.1
 
+        # https://github.com/fpco/stackage/issues/836
+        - singletons < 1.2
+
 # Package flags are applied to individual packages, and override the values of
 # global-flags
 package-flags: