The vcpkg version of Boost.Hana now just points to the official master repo, instead of VC++ Team fork:

Use the official Boost.Hana with MSVC 2017 Update 8 compiler

by Ulzii Luvsanbat

From the article:

We would like to share a progress update to our previous announcement regarding enabling Boost.Hana with MSVC compiler. Just as a quick background, Louis Dionne, the Boost.Hana author, and us have jointly agreed...