[tlbuild] hacking a single package

[Bob Tennent]

Let's say I want to hack on dvipdfm-x.  I've done

rsync -a --delete --exclude=.svn tug.org::tldevsrc

and a Build of all the current sources. Now how do I re-build just
one package after changes to the source? I don't see a relevant
Makefile. Do I really have to rebuild the whole thing?  Can I use

 --disable-all-pkgs

and explicitly enable dvipdfm-x (and any dependencies, if only I
knew what they were)?

Bob T.