More important for MacRuby on iOS seems to be the "static" compile option (not functioning yet) see http://bostonrb.org/presentations/102 (http://vimeo.com/25213324) @ 32:03 - 32:48 in combination with http://bostonrb.org/presentations/106 (http://vimeo.com/25232412) @ 06:15 - 07:40; with this "static" option some Ruby features will not be supported. - Also note @ 05:26 - 05:58 in the first video :-)