From 9cce8c3d8bd19feebe2701b416d850cab4eccb30 Mon Sep 17 00:00:00 2001
From: Adam Bergmark <adam@bergmark.nl>
Date: Sun, 22 Apr 2018 09:34:42 +0200
Subject: [PATCH] X11 upper bound for #3538

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 54f50b56..705cba8b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3416,6 +3416,9 @@ packages:
         # https://github.com/fpco/stackage/issues/3535
         - foldl < 1.4.0
 
+        # https://github.com/fpco/stackage/issues/3538
+        - X11 < 1.9
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of