Peculiar perl version issue

[Ralph Seichter]

* Bruce Miller:

> (And ideally, I'd avoid the whole version business, since LaTeXML
> *should* work with any version of perl after, I think, 5.10)

If you are able to determine a minimum required Perl version 5.x.y,
might adding 'use 5.x.y;' (e.g. via a patch) for a compile time version
check solve your issue? See https://perldoc.perl.org/functions/use.html

-Ralph