Here is one way to 'inherit' subroutines without rewriting your packages in the OO style:

use strict;
use warnings;

package Alpha;
    our $language   = "US-English";
    $Alpha::first   = "Alpha";
    sub SayHello    {"hello from package Alpha\n"};
    sub SayBye      {"Goodbye.\n"}
    sub GreetByName {"Well Hello $_[0].\n";}

package Bravo;
    our $AUTOLOAD;
    
    sub AUTOLOAD {
        $AUTOLOAD =~ s/^.+:://; # strip package name
        *sym = $Alpha::{$AUTOLOAD};
        *sym{CODE}->(@_);
    }
    
    $Bravo::first   = "Bravo";
    sub SayHello    {"hello from package Bravo\n"};

package main;
    ### begin_: get stuff from A
    print("$Alpha::first\n");
    print Alpha::SayHello();
    print("$language\n");
    print Alpha::SayBye();              # -> Goodbye. 
    print Alpha::GreetByName('Dolly');  # -> Well Hello Dolly.
    print "\n---------------------\n";

    ### begin_: get stuff from Bravo
    print("$Bravo::first\n");
    print Bravo::SayHello();
    print("$language\n");
    print Bravo::SayBye();              # -> Goodbye.
    print Bravo::GreetByName('Billy');  # -> Well Hello Billy.
    print "\n---------------------\n";
[download]

Here, when you call Bravo::foo() but foo() is not in Bravo, Bravo's AUTOLOAD subroutine will call Alpha's foo() subroutine. See 'Autoloading' in perlsub for more on AUTOLOAD.

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