From 3419cbfeee269895ce7ed2d64f0fa88ac209686d Mon Sep 17 00:00:00 2001
From: Ryan Newton <rrnewton@gmail.com>
Date: Sun, 27 Jan 2019 10:56:13 -0500
Subject: [PATCH] Tweak travis to activate docker and nix modes too. 
 allow_failures for now

---
 .travis.yml | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index 95290d428..6705fad4f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,6 +21,19 @@ addons:
       - gcc-7
       - ghc-8.4.3
 
+# Build in three modes, varying ONLY the environment used to build
+# Docker code 
+env:
+  - 
+  - DOCKER=1
+  - USE_NIX=1
+
+# Temporary:
+matrix:
+  allow_failures:
+    - env: DOCKER=1
+    - env: USE_NIX=1
+  
 install:
   # Download and unpack the stack executable
   # The Ubuntu package is only available on >16.04. Travis is using 14.04.