From 2754e8704365d33c107090d0f07858cf6a3e3447 Mon Sep 17 00:00:00 2001
From: Michael Sloan <mgsloan@gmail.com>
Date: Sun, 23 Oct 2016 16:49:43 -0700
Subject: [PATCH] Fix stack build with 7.8

---
 src/Stack/Build/ConstructPlan.hs | 1 +
 src/Stack/Dot.hs                 | 1 +
 src/Stack/Init.hs                | 1 +
 src/Stack/Setup.hs               | 1 +
 src/Stack/SetupCmd.hs            | 1 +
 src/Stack/Solver.hs              | 1 +
 src/Stack/Upgrade.hs             | 1 +
 7 files changed, 7 insertions(+)

diff --git a/src/Stack/Build/ConstructPlan.hs b/src/Stack/Build/ConstructPlan.hs
index 05c6c266f2..ab1c71a85e 100644
--- a/src/Stack/Build/ConstructPlan.hs
+++ b/src/Stack/Build/ConstructPlan.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE ConstraintKinds #-}
 {-# LANGUAGE DeriveDataTypeable #-}
 {-# LANGUAGE DeriveGeneric #-}
 {-# LANGUAGE FlexibleContexts #-}
diff --git a/src/Stack/Dot.hs b/src/Stack/Dot.hs
index e4dd155538..fd07d06829 100644
--- a/src/Stack/Dot.hs
+++ b/src/Stack/Dot.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE ConstraintKinds #-}
 {-# LANGUAGE TupleSections #-}
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE OverloadedStrings #-}
diff --git a/src/Stack/Init.hs b/src/Stack/Init.hs
index b323a81cb3..3b84ebe316 100644
--- a/src/Stack/Init.hs
+++ b/src/Stack/Init.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE ConstraintKinds       #-}
 {-# LANGUAGE FlexibleContexts      #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE OverloadedStrings     #-}
diff --git a/src/Stack/Setup.hs b/src/Stack/Setup.hs
index 644fccaffe..f60f76aa0d 100644
--- a/src/Stack/Setup.hs
+++ b/src/Stack/Setup.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE ConstraintKinds #-}
 {-# LANGUAGE DeriveDataTypeable #-} -- ghc < 7.10
 {-# LANGUAGE DeriveFunctor #-}
 {-# LANGUAGE FlexibleContexts #-}
diff --git a/src/Stack/SetupCmd.hs b/src/Stack/SetupCmd.hs
index b3694fae55..6a0560e96b 100644
--- a/src/Stack/SetupCmd.hs
+++ b/src/Stack/SetupCmd.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE ConstraintKinds #-}
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE RecordWildCards #-}
diff --git a/src/Stack/Solver.hs b/src/Stack/Solver.hs
index 9d429f9f18..8beb6eb423 100644
--- a/src/Stack/Solver.hs
+++ b/src/Stack/Solver.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE ConstraintKinds       #-}
 {-# LANGUAGE FlexibleContexts      #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE OverloadedStrings     #-}
diff --git a/src/Stack/Upgrade.hs b/src/Stack/Upgrade.hs
index ec35ae4cc2..dfafeb15ca 100644
--- a/src/Stack/Upgrade.hs
+++ b/src/Stack/Upgrade.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE ConstraintKinds       #-}
 {-# LANGUAGE FlexibleContexts      #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE OverloadedStrings     #-}