8. インストール $ brew install sbt ==> Downloading https://homebrew.bintray.com/bottles/ sbt-0.13.8.yosemite.bottle.tar.gz Already downloaded: /Library/Caches/Homebrew/ sbt-0.13.8.yosemite.bottle.tar.gz ==> Pouring sbt-0.13.8.yosemite.bottle.tar.gz ==> Caveats You can use $SBT_OPTS to pass additional JVM options to SBT: SBT_OPTS="-XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=256M" This formula is now us