From a53d2cecf50db1c144e3933f74a4dbc2c759005a Mon Sep 17 00:00:00 2001
From: Michael Snoyman <michael@snoyman.com>
Date: Tue, 7 Feb 2017 19:00:48 +0200
Subject: [PATCH] Try using cabal-head to work around haskell/cabal#4298

---
 .travis.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index aab881d9..961b30e5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -53,9 +53,9 @@ matrix:
   - env: BUILD=cabal GHCVER=7.10.3 CABALVER=1.22 HAPPYVER=1.19.5 ALEXVER=3.1.7
     compiler: ": #GHC 7.10.3"
     addons: {apt: {packages: [cabal-install-1.22,ghc-7.10.3,happy-1.19.5,alex-3.1.7], sources: [hvr-ghc]}}
-  - env: BUILD=cabal GHCVER=8.0.1 CABALVER=1.24 HAPPYVER=1.19.5 ALEXVER=3.1.7
+  - env: BUILD=cabal GHCVER=8.0.1 CABALVER=head HAPPYVER=1.19.5 ALEXVER=3.1.7
     compiler: ": #GHC 8.0.1"
-    addons: {apt: {packages: [cabal-install-1.24,ghc-8.0.1,happy-1.19.5,alex-3.1.7], sources: [hvr-ghc]}}
+    addons: {apt: {packages: [cabal-install-head,ghc-8.0.1,happy-1.19.5,alex-3.1.7], sources: [hvr-ghc]}}
 
   # Build with the newest GHC and cabal-install. This is an accepted failure,
   # see below.