+language: haskell
+
+sudo: false
+
+# Caching so the next build will be fast too.
+cache:
+ directories:
+ - $HOME/.stack
+
+before_install:
+ # Download and unpack the stack executable
+ - mkdir -p ~/.local/bin
+ - export PATH=$HOME/.local/bin:$PATH
+ - travis_retry curl -L https://get.haskellstack.org/stable/linux-x86_64.tar.gz | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'
+
+script:
+ - stack --no-terminal --skip-ghc-check test