当尝试通过MacPorts安装Sup时,我得到:->--->Computingdependenciesforsup>--->Dependenciestobeinstalled:rb-fastthreadrb-ferretrb-gettextrb-localerb-highlinerb-lockfile>rb-mime-typesrb-ncurses-rubyrb-net-sshrb-rakerb-rmailrb-trollop>--->Verifyingchecksum(s)forrb-fastthread>Error:Checksum(md5)mismatchforfastthrea