From a652628fb8db0c9f9e5bd51d866f2b49d10c12c9 Mon Sep 17 00:00:00 2001
From: Michael Walker <mike@barrucadu.co.uk>
Date: Mon, 7 Aug 2017 21:35:45 +0100
Subject: [PATCH] [travis] Only build with latest LTS for each supported GHC
 version

---
 .travis.yml | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index fff1842..8f92fdf 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,21 +10,15 @@ cache:
   - $HOME/.cabal
   - $HOME/.stack
 
-# Build matrix configuration
+# Goal: support latest 3 GHC major versions.
 matrix:
   include:
-  - env: RESOLVER="lts-3"
+  - env: RESOLVER="lts-6" # GHC 7.10
     addons: {apt: {packages: [libgmp-dev]}}
-  - env: RESOLVER="lts-4"
-    addons: {apt: {packages: [libgmp-dev]}}
-  - env: RESOLVER="lts-5"
-    addons: {apt: {packages: [libgmp-dev]}}
-  - env: RESOLVER="lts-6"
-    addons: {apt: {packages: [libgmp-dev]}}
-  - env: RESOLVER="lts-7"
-    addons: {apt: {packages: [libgmp-dev]}}
-  - env: RESOLVER="lts-8"
+  - env: RESOLVER="lts-9" # GHC 8.0
     addons: {apt: {packages: [libgmp-dev]}}
+  # - env: RESOLVER="lts-X" # GHC 8.2
+  #   addons: {apt: {packages: [libgmp-dev]}}
   - env: RESOLVER="nightly"
     addons: {apt: {packages: [libgmp-dev]}}