Why not just use a GLOB reference alias?. This will make package Bar works as an alias for Foo:
*Bar:: = \*Foo:: ;
Here's a sample:
package Foo ;
sub new { bless {} }
sub test { print "TEST> [@_]\n" ; }
package main ;
*Bar:: = \*Foo:: ;
my $foo = Foo->new() ;
$foo->test(123) ;
print "$foo\n" ;
my $bar = Bar->new() ;
$bar->test(456) ;
print "$bar\n" ;
Output:
TEST> [Foo=HASH(0x1a4ece4) 123]
Foo=HASH(0x1a4ece4)
TEST> [Foo=HASH(0x15d53dc) 456]
Foo=HASH(0x15d53dc)
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