From 940f77f03ece0f4eb38d445f9ce26b1516ea477f Mon Sep 17 00:00:00 2001
From: Michael Snoyman <michael@snoyman.com>
Date: Thu, 13 Nov 2014 14:33:07 +0200
Subject: [PATCH] Disallow mtl-prelude 2.* #327

---
 Stackage/Config.hs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Stackage/Config.hs b/Stackage/Config.hs
index ec4e2eac..f5d6e1b5 100644
--- a/Stackage/Config.hs
+++ b/Stackage/Config.hs
@@ -547,6 +547,7 @@ defaultStablePackages ghcVer requireHP = unPackageMap $ execWriter $ do
         words "hasql hasql-postgres hasql-backend postgresql-binary" ++
         words "stm-containers slave-thread partial-handler" ++
         words "base-prelude mtl-prelude"
+    addRange "Nikita Volkov <nikita.y.volkov@mail.ru>" "mtl-prelude" "< 2"
 
     -- https://github.com/fpco/stackage/issues/217
     addRange "Michael Snoyman" "transformers" "< 0.4"