From 2cadbc655813ff67e3a7f97e9bb7bc1f218ed8e5 Mon Sep 17 00:00:00 2001
From: Alexey Zabelin <hello@alexeyzabelin.com>
Date: Thu, 11 Nov 2021 18:47:13 -0600
Subject: [PATCH] Add upper bound for mmark-ext, #6288

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 170bb16f..25507cfa 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -6779,6 +6779,9 @@ packages:
       # https://github.com/commercialhaskell/stackage/issues/6278
       - ad < 4.5
 
+      # https://github.com/commercialhaskell/stackage/issues/6288
+      - mmark-ext < 0.2.1.4
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of