From e31cc1530a85f6f9165735815958c517a1fab5c1 Mon Sep 17 00:00:00 2001
From: Michael Snoyman <michael@snoyman.com>
Date: Sat, 28 Jul 2018 21:40:54 +0300
Subject: [PATCH] Upper bound for #3863

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 9438024d..b877cf9d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3624,6 +3624,9 @@ packages:
         - stm-containers < 1
         - slave-thread < 1.0.2.1
 
+        # https://github.com/commercialhaskell/stackage/issues/3863
+        - vty < 5.23
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of