My plugin for Perl 5.42.0 doesn't work with Devel::PatchPerl 2.08

[shogo82148]

I'm developing a plugin that applies a patch Perl/perl5#23178
It fixes a build error of Perl 5.42.0 on windows.

source file:

# lib/Devel/PatchPerl/Plugin/MyPlugin.pm

package Devel::PatchPerl::Plugin::MyPlugin;
use strict;
use warnings;

sub patchperl {
  my ($self, $perl) = @_;
  warn "my patching logic here\n";
}

1;

# patch.pl
use strict;
use warnings;
use FindBin;
use lib "$FindBin::Bin/lib";

$ENV{PERL5_PATCHPERL_PLUGIN} = 'Devel::PatchPerl::Plugin::MyPlugin';

use Devel::PatchPerl;

Devel::PatchPerl->patch_source( '5.42.0', './perl-5.42.0' );

1;

expected result:

$ perl patch.pl
my patching logic here

actual result:

$ perl patch.pl
Nothing else to do, '5.42.0' is fine