a role for core plugins to assert version parity

lib/Dist/Zilla/Role/CorePlugin.pm

@@ -0,0 +1,23 @@
+package Dist::Zilla::Role::CorePlugin;
+# ABSTRACT: a plugin that ships with Dist-Zilla
+use Moose::Role;
+with 'Dist::Zilla::Role::Plugin';
+
+before register_component => sub {
+  my ($self) = @_;
+  my $p_version = $self->VERSION;
+  my $z_version = $self->zilla->VERSION;
+
+  return if ! (defined $p_version or defined $z_version);
+
+  if (
+    (defined $p_version xor defined $z_version)
+    or $p_version ne $z_version
+  ) {
+    my $p_str = defined $p_version ? $p_version : '(undef)'; # XXX 5.10.0
+    my $z_str = defined $z_version ? $z_version : '(undef)';
+    $self->log_fatal("CorePlugin version $p_str does not match Dist::Zilla version $z_str");
+  }
+};
+
+1;