Migrating to Yosemite---cannot run 'port -qv installed' after OS upgrade

[Ryan Schmidt]

On Oct 19, 2014, at 1:42 PM, Carlo Tambuatco wrote:

> When you upgrade a port, everything it depends on gets updated first, right? What doesn't get upgraded should not affect what does get upgraded during the configure/build/install/activate phase, right? So how is using -u different from uninstalling everything and reinstalling everything again?

"Should not" is correct; however, "should not" and "does not" are not the same thing. You could run into problems due to undeclared dependencies. Uninstalling all ports, then reinstalling desired ports, avoids this kind of problem, which is why it is what the migration page recommends.