From 50d4851a48aa7bfd1f4da536c5429d841953c138 Mon Sep 17 00:00:00 2001
From: Mihai Maruseac <mihai.maruseac@gmail.com>
Date: Sat, 14 Apr 2018 12:05:27 -0700
Subject: [PATCH] Add mutlistate, butcher (close #3524)

---
 build-constraints.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5dc9ed3b..c5b926ee 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2774,9 +2774,9 @@ packages:
         - xml-picklers
 
     "Lennart Spitzner <hexagoxel@hexagoxel.de> @lspitzner":
-        - multistate < 0 # GHC 8.4 via base-4.11.0.0
+        - multistate
         - pqueue
-        - butcher < 0 # GHC 8.4 via multistate
+        - butcher
         - czipwith
         - brittany < 0 # GHC 8.4 via ghc-8.4.1