How can I prevent the following warning from Homebrew appearing whenever I install something?
Warning: It appears you have MacPorts or Fink installed.
Software installed with other package managers causes known problems for
Homebrew. If a formula fails to build, uninstall MacPorts/Fink and try again.
Note that I’ve never (that I recall) installed Fink on this machine and I just uninstalled Macports. I’ve tried removing /opt/local/bin from my PATH to no avail.
Did you follow the official guide? (specially the “rm” part)