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diff --git a/scripts/Dpkg/Deps/Multiple.pm b/scripts/Dpkg/Deps/Multiple.pm
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+# Copyright © 1998 Richard Braakman
+# Copyright © 1999 Darren Benham
+# Copyright © 2000 Sean 'Shaleh' Perry
+# Copyright © 2004 Frank Lichtenheld
+# Copyright © 2006 Russ Allbery
+# Copyright © 2007-2009 Raphaël Hertzog <hertzog@debian.org>
+# Copyright © 2008-2009, 2012-2014 Guillem Jover <guillem@debian.org>
+#
+# This program is free software; you may redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package Dpkg::Deps::Multiple;
+
+=encoding utf8
+
+=head1 NAME
+
+Dpkg::Deps::Multiple - base module to represent multiple dependencies
+
+=head1 DESCRIPTION
+
+The Dpkg::Deps::Multiple module provides objects implementing various types
+of dependencies. It is the base class for Dpkg::Deps::{AND,OR,Union}.
+
+=cut
+
+use strict;
+use warnings;
+
+our $VERSION = '1.02';
+
+use Carp;
+
+use Dpkg::ErrorHandling;
+
+use parent qw(Dpkg::Interface::Storable);
+
+=head1 METHODS
+
+=over 4
+
+=item $dep = Dpkg::Deps::Multiple->new(%opts);
+
+Creates a new object.
+
+=cut
+
+sub new {
+    my $this = shift;
+    my $class = ref($this) || $this;
+    my $self = { list => [ @_ ] };
+
+    bless $self, $class;
+    return $self;
+}
+
+=item $dep->reset()
+
+Clears any dependency information stored in $dep so that $dep->is_empty()
+returns true.
+
+=cut
+
+sub reset {
+    my $self = shift;
+
+    $self->{list} = [];
+}
+
+=item $dep->add(@deps)
+
+Adds new dependency objects at the end of the list.
+
+=cut
+
+sub add {
+    my $self = shift;
+
+    push @{$self->{list}}, @_;
+}
+
+=item $dep->get_deps()
+
+Returns a list of sub-dependencies.
+
+=cut
+
+sub get_deps {
+    my $self = shift;
+
+    return grep { not $_->is_empty() } @{$self->{list}};
+}
+
+=item $dep->sort()
+
+Sorts alphabetically the internal list of dependencies.
+
+=cut
+
+sub sort {
+    my $self = shift;
+
+    my @res = ();
+    @res = sort { Dpkg::Deps::deps_compare($a, $b) } @{$self->{list}};
+    $self->{list} = [ @res ];
+}
+
+=item $dep->arch_is_concerned($arch)
+
+Returns true if at least one of the sub-dependencies apply to this
+architecture.
+
+=cut
+
+sub arch_is_concerned {
+    my ($self, $host_arch) = @_;
+
+    my $res = 0;
+    foreach my $dep (@{$self->{list}}) {
+        $res = 1 if $dep->arch_is_concerned($host_arch);
+    }
+    return $res;
+}
+
+=item $dep->reduce_arch($arch)
+
+Simplifies the dependencies to contain only information relevant to the
+given architecture. The non-relevant sub-dependencies are simply removed.
+
+This trims off the architecture restriction list of Dpkg::Deps::Simple
+objects.
+
+=cut
+
+sub reduce_arch {
+    my ($self, $host_arch) = @_;
+
+    my @new;
+    foreach my $dep (@{$self->{list}}) {
+        $dep->reduce_arch($host_arch);
+        push @new, $dep if $dep->arch_is_concerned($host_arch);
+    }
+    $self->{list} = [ @new ];
+}
+
+=item $dep->has_arch_restriction()
+
+Returns the list of package names that have such a restriction.
+
+=cut
+
+sub has_arch_restriction {
+    my $self = shift;
+
+    my @res;
+    foreach my $dep (@{$self->{list}}) {
+        push @res, $dep->has_arch_restriction();
+    }
+    return @res;
+}
+
+=item $dep->profile_is_concerned()
+
+Returns true if at least one of the sub-dependencies apply to this profile.
+
+=cut
+
+sub profile_is_concerned {
+    my ($self, $build_profiles) = @_;
+
+    my $res = 0;
+    foreach my $dep (@{$self->{list}}) {
+        $res = 1 if $dep->profile_is_concerned($build_profiles);
+    }
+    return $res;
+}
+
+=item $dep->reduce_profiles()
+
+Simplifies the dependencies to contain only information relevant to the
+given profile. The non-relevant sub-dependencies are simply removed.
+
+This trims off the profile restriction list of Dpkg::Deps::Simple objects.
+
+=cut
+
+sub reduce_profiles {
+    my ($self, $build_profiles) = @_;
+
+    my @new;
+    foreach my $dep (@{$self->{list}}) {
+        $dep->reduce_profiles($build_profiles);
+        push @new, $dep if $dep->profile_is_concerned($build_profiles);
+    }
+    $self->{list} = [ @new ];
+}
+
+=item $dep->is_empty()
+
+Returns true if the dependency is empty and doesn't contain any useful
+information. This is true when a (descendant of) Dpkg::Deps::Multiple
+contains an empty list of dependencies.
+
+=cut
+
+sub is_empty {
+    my $self = shift;
+
+    return scalar @{$self->{list}} == 0;
+}
+
+=item $dep->merge_union($other_dep)
+
+This method is not meaningful for this object, and will always croak.
+
+=cut
+
+sub merge_union {
+    croak 'method merge_union() is only valid for Dpkg::Deps::Simple';
+}
+
+=back
+
+=head1 CHANGES
+
+=head2 Version 1.02 (dpkg 1.17.10)
+
+New methods: Add $dep->profile_is_concerned() and $dep->reduce_profiles().
+
+=head2 Version 1.01 (dpkg 1.16.1)
+
+New method: Add $dep->reset().
+
+=head2 Version 1.00 (dpkg 1.15.6)
+
+Mark the module as public.
+
+=cut
+
+1;