All virtual TR1 packages currently depend on just Boost while they should depend on at least boost-1.34 as the boost:tr1 was introduced in this release. See http://boost.org/more/version_history.html for details. Note that this will break dephgraph on profiles that have gcc-4 masked (hardened) as boost-1.34-* is still ~arch on most arches.
Is no one on the cpp alias or no one reading his inbox? Ping and reassigning as the cpp team is responsible according to metadata.xml.
how about reading the bug description and checking the tree? I had to rev.bump boost for a critical bug and it's not stable on any archs yet...
The bug had to be reassigned cpp@gentoo.org anyways, Tiziano. But yes, it was past midnight and I didn't bother to read in this case.
Finally done.