Pardon me for being so dense, but after multiple readings of your posts on this thread, I am still scratching my head as to what you actually mean. You write:

...it suddenly occurred to me that, when they move the application I wrote around, it might break if the provided perl is too low. I would like to be able to put in a 'use XYZ' line to at least document what version is required.

...which to me sounds exactly what a statement like 
use v5.6.0;

[download]
is supposed to do (the script will not compile with versions of perl below v5.6.0, and this is all documented in the links I posted). Therefore I am puzzled by your reply above.

the lowliest monk

In reply to Re^5: How to tell what version of Perl a script needs? by tlm
in thread How to tell what version of Perl a script needs? by Whitehawke

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