Faire cohabiter Homebrew et R.app en toute sérénité

Je viens de passer à Mavericks (10.9.2) et après des années d'utilisation de l'application MacPorts J'ai décidé d'utiliser Homebrew . J'ai réussi à installer Homebrew, mais brew doctor s'affiche :

brew doctor
Warning: Unbrewed dylibs were found in /usr/local/lib.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected dylibs:
    /usr/local/lib/libtcl8.6.dylib
    /usr/local/lib/libtk8.6.dylib

Warning: Unbrewed .pc files were found in /usr/local/lib/pkgconfig.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected .pc files:
    /usr/local/lib/pkgconfig/tcl.pc
    /usr/local/lib/pkgconfig/tk.pc

Warning: Unbrewed static libraries were found in /usr/local/lib.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected static libraries:
   /usr/local/lib/libtclstub8.6.a
   /usr/local/lib/libtkstub8.6.a

Tous ces éléments proviennent de R.app, de l'application Site web spécifique à OSX . Maintenant, je préfère utiliser la version standard de R.app plutôt que la version Homebrew (pour un certain nombre de raisons personnelles). Puis-je ignorer ces avertissements ou y aura-t-il un problème ?