https://bugs.gentoo.org/887041
https://github.com/boostorg/phoenix/issues/111
--- a/boost/phoenix/stl.hpp
+++ b/boost/phoenix/stl.hpp
@@ -11,6 +11,5 @@
 
 #include <boost/phoenix/stl/algorithm.hpp>
 #include <boost/phoenix/stl/container.hpp>
-#include <boost/phoenix/stl/tuple.hpp>
 
 #endif