systemd-rdeps.sh

#!/bin/sh
set -e
#apt-get install debtree
cd /tmp
cp /usr/bin/debtree .
patch -d/ -p0 <<'EOF'
--- /usr/bin/debtree    2012-06-21 18:30:16.000000000 -0400
+++ /tmp/debtree    2014-10-23 21:32:45.566637008 -0400
@@ -334,6 +334,18 @@

    for my $rdep (@{ $$pinfo{RevDependsList} }) {
        my $pname = $$rdep{ParentPkg}{Name};
+       my $last_or = '';
+       my $this_or = '';
+       my $is_alt = 0;
+       for my $fdep (@{ $$rdep{ParentVer}{DependsList} }) {
+           my $fpname = $$fdep{TargetPkg}{Name};
+           $last_or = $this_or;
+           $this_or = (($$fdep{CompType} & AptPkg::Dep::Or) ? '|' : ',');
+           next if $fpname ne $$pinfo{Name};
+           next if $last_or ne '|' and $this_or ne '|';
+           $is_alt = 1;
+       }
+       next if $is_alt == 1;
        my $dtype = get_type(0 + $$rdep{DepType});

        next unless grep(/^$dtype$/, @rdtypes);
EOF
/tmp/debtree --show-rdeps --rdeps-depth=10 --max-rdeps=100 --max-depth=0 --no-recommends --no-provides --no-versions --condense systemd >systemd-rdeps.dot
sed -i '/\(gnome\|-dbg\|plugin\|plug-in\)/d' systemd-rdeps.dot
dot -T png -o systemd-rdeps.png systemd-rdeps.dot