Dan Bloomquist wrote

I'm sorry, I take it back. Things were fine until I included <boost/hana.hpp> I had been testing with <boost/hana/core/when.hpp> and the likes of: template <class T> constexpr T pi = T(3.1415926535897932385); // variable template which would not work until I patched.

And to quote: In this release, we've updated the C++ compiler and standard library with enhanced support for C++11 and C++14 features, as well as preliminary support for certain features expected to be in the C++17 standard. The most notable compiler changes include complete support for generalized constexpr.

Maybe next time.... Best, Dan.

So, from reading the release notes and the compiler support at [1], I think Visual Studio 15 Preview 5 should support Hana, right? I'll check whether I can try running the tests with this release on Appveyor. Thanks for the heads up. Louis [1]: http://en.cppreference.com/w/cpp/compiler_support -- View this message in context: http://boost.2283326.n4.nabble.com/Microsoft-and-hana-tp4689376p4689388.html Sent from the Boost - Users mailing list archive at Nabble.com.