using pkg_comp against the running tree?

["Steven M. Bellovin" <smb%cs.columbia.edu@localhost>]

Is there some way to use pkg_comp against the current tree?  That is,
sometimes I want to rebuild everything, but I don't want to use the
latest -current source.  (If nothing else, the obvious way to use the
latest source involves building 'release', which is much more expensive
than 'sets', especially on i386 where so many kernels are built.)

                --Steve Bellovin, http://www.cs.columbia.edu/~smb