$ perl -v | head -3

This is perl 5, version 30, subversion 0 (v5.30.0) built for x86_64-linux

$ perl -T -MDate::Manip -E 'say $Date::Manip::VERSION;'
6.82
$

##</code><code>##

$ ENV=foo perl -T -MDate::Manip -E 'say $Date::Manip::VERSION;'
ERROR LOADING MODULE: Date::Manip::DM6 at /path/to/perlbrew/perls/perl-5.30.0/lib/site_perl/5.30.0/Date/Manip.pm line 35.
Compilation failed in require.
BEGIN failed--compilation aborted.
$