--- foo/misc/boost.orig/libs/locale/src/util/locale_data.cpp.new	2022-02-17 22:41:27.730549039 +0000
+++ foo/misc/boost/libs/locale/src/util/locale_data.cpp
@@ -72,6 +72,8 @@
     bool locale_data::parse(const std::string& locale_name)
     {
         reset();
+        encoding_ = "UTF-8";
+        utf8_ = true;
         return parse_from_lang(locale_name);
     }