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1. rubyÒѳÉΪ1.87
2. ±ØÐëÏȰ²×°°²×°¹âÅÌÀïµÄеÄxcode£¬ÔÚ"optional"Ŀ¼Àï
3. ¿ÉÄÜÐèÒªÖØÐ°²×°macport
http://trac.macports.org/wiki/Migration
4. »òÕßÉý¼¶macport
http://weblog.rubyonrails.org/2009/8/30/upgrading-to-snow-leopard
$ sudo port selfupdate
$ sudo port sync
$ sudo port upgrade --force installed
5. ÖØÐ°²×°ruby ºÍgem
http://weblog.rubyonrails.org/2009/8/30/upgrading-to-snow-leopard
5. ÖØÐ°²×°ferret
http://purplellamas.net/blog/2009/09/14/snow-leopard-migration-issues/
Æäʵ¾ÍÊÇuninstall È»ºóÔÙ×°
6. ÖØÐ°²×°mysql ºÍ mysql gem
http://weblog.rubyonrails.org/2009/8/30/upgrading-to-snow-leopard
×¢Òâ±ØÐë֨װmysql server£¬È»ºó°²×°mysql gem
$ sudo env ARCHFLAGS="-arch x86_64" gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config
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