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diff --git a/src/installer/OpenSLX/OSSetup/MetaPackager/Base.pm b/src/installer/OpenSLX/OSSetup/MetaPackager/Base.pm
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+++ b/src/installer/OpenSLX/OSSetup/MetaPackager/Base.pm
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+# Copyright (c) 2006, 2007 - OpenSLX GmbH
+#
+# This program is free software distributed under the GPL version 2.
+# See http://openslx.org/COPYING
+#
+# If you have any feedback please consult http://openslx.org/feedback and
+# send your suggestions, praise, or complaints to feedback@openslx.org
+#
+# General information about OpenSLX can be found at http://openslx.org/
+# -----------------------------------------------------------------------------
+# Base.pm
+#    - provides empty base of the OpenSLX OSSetup::MetaPackager API.
+# -----------------------------------------------------------------------------
+package OpenSLX::OSSetup::MetaPackager::Base;
+
+use strict;
+use warnings;
+
+our $VERSION = 1.01;        # API-version . implementation-version
+
+use Scalar::Util qw( weaken );
+
+use OpenSLX::Basics;
+
+################################################################################
+### interface methods
+################################################################################
+sub new
+{
+    confess "Creating OpenSLX::OSSetup::MetaPackager::Base-objects directly makes no sense!";
+}
+
+sub initialize
+{
+    my $self = shift;
+    my $engine = shift;
+
+    $self->{'engine'} = $engine;
+    weaken($self->{'engine'});
+        # avoid circular reference between meta-packager and its engine
+
+    return;
+}
+
+sub initPackageSources
+{
+}
+
+sub setupPackageSource
+{
+}
+
+sub updateBasicVendorOS
+{
+}
+
+sub installPackages
+{
+}
+
+sub removePackages
+{
+}
+
+1;
+################################################################################
+
+=pod
+
+=head1 NAME
+
+OpenSLX::OSSetup::MetaPackager::Base - the base class for all OSSetup::MetaPackagers
+
+=head1 SYNOPSIS
+
+  package OpenSLX::OSSetup::MetaPackager::coolnewpkg;
+
+  use vars qw(@ISA $VERSION);
+  @ISA = ('OpenSLX::OSSetup::MetaPackager::Base');
+  $VERSION = 1.01;
+
+  use coolnewpkg;
+
+  sub new
+  {
+      my $class = shift;
+      my $self = {};
+      return bless $self, $class;
+  }
+
+  # override all methods of OpenSLX::OSSetup::MetaPackager::Base in order to
+  # implement the support for a new meta-packager
+  ...
+
+I<The synopsis above outlines a class that implements a
+OSSetup::MetaPackager for the (imaginary) meta-packager B<coolnewpkg>>
+
+=cut