If you think it doesn't matter which parser is used, you've been lucky or you haven't used XML::Simple much. You don't have to be an asshole about it.

There is no difference in regards to "safety" if the op sets the preffered parser via $ENV{XML_SIMPLE_PREFERRED_PARSER} or via $XML::Simple::PREFERRED_PARSER , they're both equally safe

Equally neither is more or less error prone than the oper, especially since the op is using PAR::Packer

For such a hyper pedant you sure have a flare for saying nonsense and being rude when you're called on it.

There is no difference in regards to "safety" if the op sets the preffered parser via $ENV{XML_SIMPLE_PREFERRED_PARSER} or via $XML::Simple::PREFERRED_PARSER , they're both equally safe

One is less reliable than the other. $ENV{XML_SIMPLE_PREFERRED_PARSER} is overridden by $XML::Simple::PREFERRED_PARSER.

It's using local I said was safer. Without it, one module using XML::Simple won't break another using XML::Simple.

It's using local I said was safer. Without it, one module using XML::Simple won't break another using XML::Simple.

Module? The op is packing a program, just add the overrides in the program when packing with PAR, and thats the end of that.