From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sam Varner <snick-a-doo@comcast.net>
Subject: Boost with C++14
Date: Sun, 23 Dec 2018 10:44:21 -0500
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Hi all,

When compiling my own code with gcc 8.2.0 I get "undefined reference to
`boost::system::detail::generic_category_instance'" unless I use
-std=c++11.  Word on the net is that I need to use boost libraries
compiled for C++14. 

'guix edit boost' shows boost and boost-cxx14 packages.  I see that
other packages use the latter with (inputs `((boost ,boost-cxx14))).
How do I link the C++14 variant with my code?  Thanks.