A couple of things note when messing with pkgsrc:
* Remember that /usr/pkg also tends to contain configuration files that
you may have edited, in /usr/pkg/etc, so don't accidently blow away
stuff you need.
* When doing major messing around with pkgsrc it might be prudent to
create a chroot'd copy of the system and do the messing around
inside the chroot instead of on the main system's directory tree.
It's easiest to just cpdup a copy of various things into the chroot,
and remember to do the second mount_devfs. A more complex scenario
would involve a mix of cpdup and mount_null null mounts to construct
the chroot environment.
Having a lot of disk space helps matters too, particularly when
playing with pkgsrc.
-Matt
