class Config
{
	static const char[1] defaultpathsep="/";
	static const char[1] defaulttypesep=":";
	char[1] pathsep=defaultpathsep;
	char[1] typesep=defaulttypesep;
}

C:\dev>dmd asd.d
asd.d(5): Error: non-constant expression defaultpathsep
asd.d(6): Error: non-constant expression defaulttypesep