From 3b2ab75712df2076d4e64802159b828311c3c7d8 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Sat, 30 Jun 2018 22:35:56 +0200
Subject: Revert "Travis: use -j2 for dependencies installation."

This reverts commit ae9d9138c37e390361c716f989685d1cfcdbc577.
---
 .travis.yml | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 5eb1abc44..c87ef4f82 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -113,7 +113,15 @@ install:
     cabal)
       cabal --version
       travis_retry cabal update
-      cabal install -j2 --disable-optimization --only-dependencies --flags="$FLAGS" --enable-tests --force-reinstalls --reorder-goals --max-backjumps=-1 $CABALARGS
+      case "$GHCVER" in
+        7.10.3)
+           cabal install --disable-optimization --force-reinstalls yaml-0.8.30 && \
+           cabal install -v1 --disable-optimization --flags="$FLAGS" --enable-tests --force-reinstalls --reorder-goals --max-backjumps=-1 $CABALARGS
+           ;;
+        *)
+           cabal install --disable-optimization --only-dependencies --flags="$FLAGS" --enable-tests --force-reinstalls --reorder-goals --max-backjumps=-1 $CABALARGS
+           ;;
+      esac
       ;;
   esac
 
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