That kind of thing is fine to have in the code base, but IMO we
shouldn't make it default until it is in fact fully functional -- until
it is positively known that it can successfully pack and unpack the
stack and register set in a way that is somewhat convenient and
efficient for Swarm and also that it is feasible to get that binary
package on systems we care about. My recollection was that gutting out
gnustep to get just the relevant bits of source code was going to be
rather involved.