$ sudo port install py27-pip
---> Computing dependencies for py27-pip
---> Installing py27-pip @8.1.2_0
Error: org.macports.install for port py27-pip returned: no destroot found at: /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_python_py-pip/py27-pip/work/destroot
Please see the log file for port py27-pip for details:
/opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_python_py-pip/py27-pip/main.log
To report a bug, follow the instructions in the guide:
http://guide.macports.org/#project.tickets
Error: Processing of port py27-pip failed
解法就是老老實實參考 MacPorts - 2.4. Uninstall 官方文件清資料，仔細做了以下動作：
$ sudo rm -rf /opt/local/ ~/.macports
下載並安裝最新版 MacPorts: https://distfiles.macports.org/MacPorts/MacPorts-2.3.4-10.11-ElCapitan.pkg
重新安裝需要的軟體：
$ sudo port selfupdate
$ sudo port install py27-pip
