ref: 21e50eeff1bac67817406cc9df8e5dce5712eb6e
dir: /.github/actions/install_deps.sh/
case `echo $1 | cut -d '-' -f 1` in ubuntu) sudo apt-get -qq update sudo apt-get install -yq bison libpng-dev pkg-config ;; macos) brew install libpng pkg-config md5sha1sum ;; *) echo "WARNING: Cannot install deps for OS '$1'" ;; esac yacc --version