If we organize like the sandbox,
Last I looked, there was no real organization there. Or, there were at least two organizations:
http://svn.boost.org/svn/boost/sandbox/boost/library-name http://svn.boost.org/svn/boost/sandbox/libs/library-name
which is unsustainable, and
And depricated.
http://svn.boost.org/svn/boost/sandbox/library-name/boost/ http://svn.boost.org/svn/boost/sandbox/library-name/libs/
The planned/proposed organization is roughly like the latter. If you want to look at the organization in detail, see https://github.com/boost-lib/boost
Nod, either could be supported by Boost.Build trivially provided there's a complete (integrated) release tree sitting around somewhere - otherwise as you mention the compiler command paths get stupidly long.... John.