when 'darwin-amd64'
          case resource.version
          when '0.18.1' then 'e807abf95061177241d8fcc6b80fee635d236a47a8befc39600a67e4cfda2f83'
          when '0.18.0' then 'a496c786f10e1abfc4c607637477fdcee829e3a25caa37ad4ae69714a927ea15'
          when '0.16.0' then '5f932f3601a1b5ff9e205f130635fa62638ea66e335a420457e7df39d95e4796'