From c6e6a128c952d56b0c73a4cbe828b58918f2d8df Mon Sep 17 00:00:00 2001
From: Joe Kachmar <joseph.kachmar@gmail.com>
Date: Tue, 4 Feb 2020 03:37:04 +0000
Subject: [PATCH] Restricts constraints < 0.12 (#5124)

---
 build-constraints.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 29d79bf8..38925960 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -836,7 +836,7 @@ packages:
         - compensated
         - compressed < 0
         - concurrent-supply < 0 # hashable-1.3.0
-        - constraints
+        - constraints < 0.12 # https://github.com/commercialhaskell/stackage/issues/5124
         - contravariant
         - distributive
         - discrimination < 0