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  my $path = $collection->failed_dir;

Returns the path to the directory containing failure markers.

=head3 failed_file

  my $path = $collection->failed_file($module_dir);

Returns the path to the failure marker file for a module.

=head3 dc_file

  my $path = $collection->dc_file;

Returns the path to the C<dc> utility script.

=head2 Maintenance

=head3 compress_old_versions

  $collection->compress_old_versions($num_versions_to_keep);

Compresses old coverage results, keeping only the specified number of most
recent versions for each module.

=head3 get_latest

  $collection->get_latest;

Fetches and prints the latest CPAN release information using
L<CPAN::Releases::Latest>.

=head2 System Commands

=head3 sys

  my $output = $collection->sys(@command);

Runs a system command, displaying the first portion of output immediately
and buffering the rest. Returns the output on success, empty string on
failure.

=head3 bsys

  my $output = $collection->bsys(@command);

Like C<sys>, but buffers all output (no immediate display).

=head3 fsys

  my $output = $collection->fsys(@command);

Like C<sys>, but dies on failure.

=head3 fbsys

  my $output = $collection->fbsys(@command);

Like C<bsys>, but dies on failure.

=head1 EMBEDDED CLASSES

=head2 Devel::Cover::Collection::Template::Provider

A subclass of L<Template::Provider> that provides built-in templates for
HTML report generation. The following templates are available:

=over 4

=item * colours - CSS colour definitions

=item * html - Base HTML wrapper

=item * summary - Main index page

=item * about - About page

=item * module_by_start - Module listing by first letter

=back

=head1 DEPENDENCIES

=over 4

=item * Perl 5.42.0 or later (for builtin C<class> feature)

=item * L<Devel::Cover::DB>

=item * L<JSON::MaybeXS>

=item * L<Parallel::Iterator>

=item * L<Template>

=item * L<Time::HiRes>

=back

=head1 SEE ALSO

L<Devel::Cover>, L<http://cpancover.com>

=head1 AUTHOR

Paul Johnson E<lt>paul@pjcj.netE<gt>

=head1 LICENCE

Copyright 2014-2026, Paul Johnson (paul@pjcj.net)

This software is free. It is licensed under the same terms as Perl itself.

The latest version of this software should be available on CPAN and from my
homepage: L<https://pjcj.net/>.

=cut