Hallow all!
since ParserDetails.ini is ordinary edit with standalone tools, the link
/etc/perl/XML/SAX/ from XML/SAX/ParserDetails.ini crushes due to editor
renames original file to backup, and crates new one copy, therefore that
link loose or go to old file.
to keep this link more stable, imho, better to sym-link
XML/SAX/ParserDetails.ini from /etc/perl/XML/SAX/