Get macOS back up and running

Author: zbeekman

.travis.yml

@@ -13,13 +13,18 @@ env:
     - MPICH_GCC7_BOT_URL_HEAD="https://github.com/sourceryinstitute/OpenCoarrays/files/1956441/"
     - MPICH_BOT_URL_TAIL="mpich-3.2.1_1.high_sierra.bottle.1.tar.gz"
     - BUILD_TYPES="Debug RelWithDebInfo Release CodeCoverage"
-  matrix:
-    - GCC=6 OSX_PACKAGES="gcc@6 shellcheck" BUILD_TYPE="InstallScript"
-    - GCC="6 7" OSX_PACKAGES="gcc@7 gcc@6 cmake shellcheck" BUILD_TYPE="cmake"
+  # matrix:
+  #   - GCC="6 7" OSX_PACKAGES="gcc@7 gcc@6 cmake shellcheck" BUILD_TYPE="cmake"
 
 matrix:
   fast_finish: true
   include:
+    - &macOS
+      os: osx
+      env:
+        - BUILD_TYPE="InstallScript"
+          GCC=6
+          OSX_PACKAGES="gcc@6 shellcheck"
     - &ubuntu
       os: linux
       sudo: false