New curator check as a separate build matrix component

.travis.yml

@@ -10,9 +10,14 @@ addons:
     packages:
     - libgmp-dev
 
+matrix:
+  include:
+  - env: CHECK_SCRIPT="./etc/ci-script.sh"
+  - env: CHECK_SCRIPT="./etc/curator-2-check.sh"
+
 # Edit etc/ci-script.sh to change GHC version
 script:
-- ./etc/ci-script.sh
+- $CHECK_SCRIPT
 
 # Caching doesn't work with sudo: true
 #cache:

etc/ci-script.sh

@@ -15,13 +15,6 @@ bunzip2 stackage-curator.bz2
 chmod +x stackage-curator
 mv stackage-curator ~/.local/bin
 
-# Get new stackage-curator
-CURATOR2=stackage-curator-2-9132b4b184f1f7f27c4c80ec0609460cea22ae75
-wget  "https://s3.amazonaws.com/www.snoyman.com/stackage-curator-2/$CURATOR2.bz2"
-bunzip2 "$CURATOR2.bz2"
-chmod +x $CURATOR2
-mv $CURATOR2 ~/.local/bin/stackage-curator-2
-
 # Install GHC
 stack setup $GHCVER
 
@@ -29,11 +22,4 @@ stack setup $GHCVER
 stack update
 
 # Check
-stack --resolver ghc-$GHCVER exec stackage-curator check
-
-# New curator check
-stackage-curator-2 update &&
-  stackage-curator-2 constraints &&
-  stackage-curator-2 snapshotincomplete &&
-  stackage-curator-2 snapshot &&
-  stackage-curator-2 checksnapshot
+exec stack --resolver ghc-$GHCVER exec stackage-curator check

etc/curator-2-check.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+set -euxo pipefail
+
+mkdir -p ~/.local/bin
+export PATH=$HOME/.local/bin:$PATH
+
+# Get new Stackage curator
+CURATOR2=stackage-curator-2-9132b4b184f1f7f27c4c80ec0609460cea22ae75
+wget  "https://s3.amazonaws.com/www.snoyman.com/stackage-curator-2/$CURATOR2.bz2"
+bunzip2 "$CURATOR2.bz2"
+chmod +x $CURATOR2
+mv $CURATOR2 ~/.local/bin/stackage-curator-2
+
+# New curator check
+stackage-curator-2 update &&
+  stackage-curator-2 constraints &&
+  stackage-curator-2 snapshotincomplete &&
+  stackage-curator-2 snapshot &&
+  stackage-curator-2 checksnapshot