From 42abf64fd4a06c68979d74eb202df3ae675e1263 Mon Sep 17 00:00:00 2001
From: Jens Petersen <juhpetersen@gmail.com>
Date: Sun, 6 Oct 2019 11:00:29 +0800
Subject: [PATCH] ansi-terminal < 0.10.1 for concurrent-output (#4890)

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5178c902..922878b5 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5699,6 +5699,8 @@ packages:
         - fast-logger < 3.0.0
         - wai-logger < 2.3.6
 
+        # https://github.com/commercialhaskell/stackage/issues/4890
+        - ansi-terminal < 0.10.1
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of