我正在尝试升级我的MacPorts。我更新了我的xcode命令行后成功运行sudo port -d selfupdate，但问题仍然存在。如何成功升级过时的安装？我正在运行Mac Yosemite。
$ sudo port upgrade outdated
---> Fetching distfiles for python25
Error: python25 is not supported on Yosemite or later.
Error: org.macports.fetch for port python25 returned: unsupported platform
Please see the log file for port python25 for details:
/opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_python25/python25/main.log
Error: Unable to upgrade port: 1
To report a bug, follow the instructions in the guide:
http://guide.macports.org/#project.tickets
日志文件：
$ cat /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_python25/python25/main.log
version:1
:debug:main Executing org.macports.main (python25)
:debug:main changing euid/egid - current euid: 0 - current egid: 0
:debug:main egid changed to: 501
:debug:main euid changed to: 502
:debug:fetch fetch phase started at Fri Jan 9 22:13:21 PST 2015
:notice:fetch ---> Fetching distfiles for python25
:debug:fetch Executing proc-pre-org.macports.fetch-fetch-0
:error:fetch python25 is not supported on Yosemite or later.
:error:fetch org.macports.fetch for port python25 returned: unsupported platform
:debug:fetch Error code: NONE
:debug:fetch Backtrace: unsupported platform
while executing
"proc-pre-org.macports.fetch-fetch-0 org.macports.fetch"
("eval" body line 1)
invoked from within
"eval $pre $targetname"
:info:fetch Warning: targets not executed for python25: org.macports.destroot org.macports.fetch org.macports.checksum org.macports.extract org.macports.patch org.macports.configure org.macports.build
:notice:fetch Please see the log file for port python25 for details:
/opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_python25/python25/main.log