From fb167d079d93f32e43493d34df08a65b0d98af4f Mon Sep 17 00:00:00 2001
From: Adam Bergmark <adam@bergmark.nl>
Date: Wed, 21 Nov 2018 08:44:07 +0100
Subject: [PATCH] base-unicode-symbols upper bound for #4156

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 12354521..584b9983 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3842,6 +3842,9 @@ packages:
 
         # https://github.com/commercialhaskell/stackage/issues/4131
         - http-api-data < 0.4
+
+        # https://github.com/commercialhaskell/stackage/issues/4156
+        - base-unicode-symbols < 0.2.3
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of