Dear all, 1.67.0.beta1 has a regression of missing include in Boost.Graph which prevents deal.II https://www.dealii.org <https://www.dealii.org/> project from building. Even though the file was not modified since 2015, it’s a regression as we have not had this issue with previous versions of boost. The one-liner fix is here https://github.com/boostorg/graph/pull/104 <https://github.com/boostorg/graph/pull/104> I would appreciate if you could merge it prior to 1.67.0 release. ps. https://github.com/boostorg/graph/pull/101 <https://github.com/boostorg/graph/pull/101> is a better way to fix it but as suggested in https://svn.boost.org/trac10/ticket/13505#comment:4 <https://svn.boost.org/trac10/ticket/13505#comment:4> this might not get merged into 1.67.0, which would be pity. Regards, Denis