- - if [[ "$TRAVIS_OS_NAME" == "windows" ]]; then choco install haskell-stack nodejs; fi
- - stack upgrade --binary-only # apt dist lags behind
+ - if [[ "$TRAVIS_OS_NAME" == "windows" ]]; then choco install haskell-stack nodejs 7zip; fi
+ - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then curl -sSL https://get.haskellstack.org/ | sh; fi