brew doctor advertencia sobre scripts de configuration de Python

¿Puede alguien explicar qué debo hacer sobre la siguiente advertencia de Homebrew:

Warning: "config" scripts exist outside your system or Homebrew directories. `./configure` scripts often look for *-config scripts to determine if software packages are installed, and what additional flags to use when compiling and linking. Having additional scripts in your path can confuse software installed via Homebrew if the config script overrides a system or Homebrew provided script of the same name. We found the following "config" scripts: /opt/local/bin/python-config /System/Library/Frameworks/Python.framework/Versions/2.7/bin/python-config /System/Library/Frameworks/Python.framework/Versions/2.7/bin/python2-config /System/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7-config 

¿No son estos los files de configuration originales de Python instalados por OS X? Si es así, seguramente no debería eliminarlos? ¿Se requieren python-config y Python2-config si solo uso Python 2.7? ¿Debo cambiar mi $ PATH que es:

 Oliviers-iMac:~$ echo $PATH /opt/local/bin:/opt/local/sbin:/Library/Frameworks/Python.framework/Versions/2.7/bin:/System/Library/Frameworks/Python.framework/Versions/2.7/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/usr/local/MacGPG2/bin 

ACTUALIZACIÓN : desinstalé exitosamente Macports y eliminé /opt/local/bin:/opt/local/sbin de mi $ PATH, pero sigo recibiendo la siguiente advertencia:

 Warning: "config" scripts exist outside your system or Homebrew directories. `./configure` scripts often look for *-config scripts to determine if software packages are installed, and what additional flags to use when compiling and linking. Having additional scripts in your path can confuse software installed via Homebrew if the config script overrides a system or Homebrew provided script of the same name. We found the following "config" scripts: /System/Library/Frameworks/Python.framework/Versions/2.7/bin/python-config /System/Library/Frameworks/Python.framework/Versions/2.7/bin/python2-config /System/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7-config 

¿Cómo puedo solucionar esto? Gracias de antemano.

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