That's not a problem:

use strict;
use warnings;

use Tk;
my $mw = MainWindow->new;

my $package = 'normal';
foreach my $type (qw(normal pckg_A pckg_B)) {
    $mw->Radiobutton(
        -text     => "  $type",
        -value    => $type,
        -variable => \$package,
    )->pack;
}

MainLoop;
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Thanks stefbv. However, I'm using notebook and I have it packed earlier on my code, guess I can only use grid to set the position right?

I have something like this is my early code

my $tab = $notebook->add('page1', -label=> 'Package');
my $mwt_pckg = $tab1->Frame()->pack ;
[download]

Then folowing by this

 my $package = 'normal';
foreach my $type (qw(normal pckg_A pckg_B)) {
    $mwt_pckg->Radiobutton(
        -text     => "  $type", #modified here as you suggested.
        -value    => $type,
        -variable => \$package,
#)->grid(-sticky => 'w', -column => 1, -row => 2);
    )->grid(-sticky => 'w', -column => 1, -row => 2, -columnspan=>20, 
+-padx => 50, );
[download]

However, it just doesn't works as I wish.

Note, if I modify the code replacing the current grid position with pack, the gui doen't pop up at all.

Make a new Frame for the radio buttons, and use grid to add it to the page.

my $rb_frm = $mwt_pckg->Frame()->grid(
    -sticky     => 'w',
    -column     => 1,
    -row        => 2,
    -columnspan => 20,
    -padx       => 50,
);

my $package = 'normal';
foreach my $type (qw(normal pckg_A pckg_B)) {
    $rb_frm->Radiobutton(
        -text     => "  $type",
        -value    => $type,
        -variable => \$package,
        -command  => sub { say $package; },
    )->pack;
}
[download]