From 4e2d25ddc2e7a9b8a00adc9f1d4d6dfc26fce8ae Mon Sep 17 00:00:00 2001
From: thielema <git@henning-thielemann.de>
Date: Sun, 4 Aug 2019 12:02:50 +0200
Subject: [PATCH] re-add mbox-utility

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3de2b36a..11fed075 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -312,7 +312,7 @@ packages:
         - markov-chain
         - midi
         - midi-music-box
-        - mbox-utility < 0 # https://github.com/commercialhaskell/stackage/issues/4655
+        - mbox-utility
         - med-module
         - monoid-transformer
         - non-empty