It makes the property_map library/repo/package not depend on the graph library/repo/package.
The property_map library is a header only library. Please point out to me where in the property_map headers there is any reference to anything in the graph library.
Le-sigh.
I suggest you do your equivalent of this:
boost-trunk/boost/property_map{master}$ git grep boost/graph
What makes you think Edward has a git repro around - most of us are still in SVN land.
I won't ruin the surprise for you by pasting the output.
If you don't understand my point after seeing the output, please just accept that you don't understand the point. No need to respond. A long sub-thread like this is bad.
Thanks for taking the thread off-track and into the human-round-trip zone,
Whatever your frustration, that's about the most singularly unhelpful answer I've seen in a while, Just saying your, John.