Didier Verna <verna(a)inf.enst.fr&gt; writes in xemacs-beta(a)xemacs.org: This is a feature. Everything that is installed as source is bytecompiled. Do a `make distclean; cd ..; cvs release -d <unwanted-package>' to get rid of the source of unwanted packages. `cvs update' does not [re]create directories, so you should be able to continue updating when necessary. ? Can you provide any more details? Can you delete the source as described above, then do `cvs update -d skk' to get good source? That is correct. The first test of this is going to be when I merge Sumo building with my own personal Local.rules. Something else is required for doing a partial bytecompile. Would you consider a marker file sufficient? For example, if you could touch a `.nobuild' file in the packages you never want to build, would that work for you?