Cleaning Out Ports?

[Pat Maddox]

If you try to remove a package that has child dependencies, then it'll
let you know.  You'll have to use the -f flag to force it to delete
the package, despite there being any dependencies.  If you want to
delete a package along with all its dependencies, you can use the -r
flag.

Use pkgdb -F to fix any dependencies that might be broken.

I think that's about right.  I'm a FreeBSD newbie :)