https://bugs.winehq.org/show_bug.cgi?id=53354
--- Comment #4 from Jörn Heusipp osmanx@problemloesungsmaschine.de --- I do not think an addon module like mono or gecko would be desirable here. At least in the MSVC C++ Standard library case that I originally outlined, any user would only ever notice the missing addon when things do not work correctly and possibly crash. There is no practical way to detect the need for ICU in this case before running the program, and even at runtime the user could only ever get notified about the missing DLLs by Wine modifying LoadLibrary and friends to print an explicit warning in this particular case, which sounds like kind of the wrong approach to me.