+ - 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 47b5281d9d8ffe7348f7f7fcb3ce36b4eabd4f06
+ - git submodule init
+ - git submodule sync
+ - git submodule update --init
+ - stack --no-terminal --skip-ghc-check -j2 install
+ - stack exec hoogle generate
+ - cd $TRAVIS_BUILD_DIR
+ - npm update
+ - npm i -g javascript-typescript-langserver