Query is how to obtain (or what to do about) a newer version of module that is now available only in perl. Short of update of perl, there is no other supported|maintained way to obtain a newer version of a module. Then the only way is to extract the files from perl distribution?.
In particular, the module is File::stat. Currently installed version is less than 1.02 which lacks -X function overloading (perl is 5.8.x). The updated version, 1.02+, of the module is not available separately on CPAN, or I failed to find one. In this case of my grep|ack like program, I dispensed with the module & thus any related caching benefits; reverted to built-in -X functions, giving them file paths instead of File::stat object. (For completeness sake I will add that the module seems to be in pure perl and the sole file could possibly be copied to achieve module upgrade, passing on any niceties of a formal upgrade. Also, I thought BSD::stat might be able to replace File::stat but then I additionally need the module to work at least on a GNU/Linux system (and possibly Cygwin).)