-if [ ! -f emsdk/emsdk/emsdk ]; then cd $TRAVIS_BUILD_DIR/emsdk; wget https://github.com/iodide-project/pyodide-demo/raw/toolchain/pyodide_toolchain.tgz; tar -xf pyodide_toolchain.tgz; cd $TRAVIS_BUILD_DIR; fi
-if [ ! -f emsdk/emsdk/emsdk ]; then cd $TRAVIS_BUILD_DIR/emsdk; wget https://github.com/iodide-project/pyodide-demo/raw/toolchain/pyodide_toolchain.tgz; tar -xf pyodide_toolchain.tgz; cd $TRAVIS_BUILD_DIR; fi