From aba967eba27c4854d1ce5ec59693ec1454e62458 Mon Sep 17 00:00:00 2001
From: Adam Bergmark <adam@bergmark.nl>
Date: Sat, 2 Nov 2019 01:30:34 +0100
Subject: [PATCH] haskell-src-exts < 1.22.0 for #4958

---
 build-constraints.yaml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/build-constraints.yaml b/build-constraints.yaml
index fb77b197..751fc847 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5253,7 +5253,9 @@ packages:
         # Need to always match the version shipped with GHC
         - Win32 == 2.6.1.0
 
-    "Stackage upper bounds": []
+    "Stackage upper bounds":
+      # https://github.com/commercialhaskell/stackage/issues/4958
+      - haskell-src-exts < 1.22.0
 
 # end of packages