cask 'earlybird' do version '49.0a2' sha256 :no_check # required as upstream package is updated in-placea url "https://ftp.mozilla.org/pub/mozilla.org/thunderbird/nightly/latest-comm-aurora/thunderbird-#{version}.en-US.mac.dmg" name 'Earlybird' name 'Thunderbird Nightly' homepage 'https://www.mozilla.org/en-US/thunderbird/channel/' app 'Earlybird.app' end