I am wondering if you have circular dependencies.
The following snippet won't actually figure out what the
circular dependency is, but it will report if that is the
problem, and will at least cut down the list to just the
circular dependencies and things that depend on the
circular dependencies. It shouldn't be too hard for you
to modify this to find an actual recursive dependency in
your list.
use Data::Dumper;
$Data::Dumper::Indent = 1;
my @remove;
while (%depend) {
# Clear dependencies
foreach my $dep (values %depend) {
@$dep = grep {exists $depend{$_}} @$dep;
}
# What can I remove?
my @can_remove = grep {0 == @{$depend{$_}}} keys %depend;
if (@can_remove) {
delete $depend{$_} foreach @can_remove;
push @remove, @can_remove;
}
else {
# Uh, oh
print "CIRCULAR DEPENDENCIES DETECTED\n";
print Data::Dumper->Dump ([\%depend], ['*depend']);
die "ABORTING";
}
}
print Data::Dumper->Dump([\@remove], ['*remove']);