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C<"required"> options to specify that signatures from anyone are to be trusted.

Here are some example siglevels:

  $alpm->set_defsiglvl({ 'pkg' => 'never', 'db' => 'never' });
  $alpm->set_defsiglvl({ 'pkg' => 'optional', 'db' => 'required trustall' });
  $alpm->set_defsiglvl({ 'pkg' => 'required', 'db' => 'optional' });

=head1 ERRORS

In previous version of this module, errors were thrown automatically. Since then,
errors are no longer stored in a global variable (like UNIX's errno) but are instead
stored inside of the libalpm handle structure. In order to preserve the old functionality
I will have to either store a copy of the ALPM object inside every other object or use
the internal C representation which I'm technically not supposed to know.

Whatever. I'm too lazy for either of those. What this means for you is you really really
should check for errors yourself. If a method call returns undef you should follow it
up with an "or die". Something like this:

  $db->force_update or die $alpm->strerror;

This is annoying but not unlike most other perl error checking. If you find yourself
calling methods on an undefined value then an error most likely occurred.

But wait there's more! Errors are actually thrown when getting/setting options and
an error condition occurs.

=head1 SEE ALSO

=over

=item * L<ALPM::Conf>, L<ALPM::DB>, L<ALPM::Package>, L<ALPM::Transaction>

=item * L<http://projects.archlinux.org/pacman.git/> - git repository for pacman/libalpm