+ - mkdir -p haskell-ide-engine
+ - cd $HOME/haskell-ide-engine
+ - git init
+ - git remote add origin https://github.com/haskell/haskell-ide-engine.git
+ - git pull origin master
+ - git checkout 890ca3f2f3bd3bfe74e1f38a426b383a847763bb
+ - git submodule init
+ - git submodule sync
+ - git submodule update --init
+ - stack --no-terminal --skip-ghc-check -j2 install --stack-yaml=stack-8.6.2.yaml
+ - stack exec hoogle generate --stack-yaml=stack-8.6.2.yaml
+ - cd $TRAVIS_BUILD_DIR
+ - npm update
+ - npm i -g javascript-typescript-langserver