Use nowide from Boost. From Fedora.

Index: logging/CMakeLists.txt
--- logging/CMakeLists.txt.orig
+++ logging/CMakeLists.txt
@@ -4,7 +4,6 @@ find_package(Threads)
 add_leatherman_deps(${Boost_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
 add_leatherman_includes("${Boost_INCLUDE_DIRS}")
 
-leatherman_dependency(nowide)
 leatherman_dependency(locale)
 
 if (CMAKE_SYSTEM_NAME MATCHES "Linux" OR CMAKE_SYSTEM_NAME MATCHES "SunOS")
