Index: modules/aggregator/aggregator.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/aggregator/aggregator.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 aggregator.info
--- modules/aggregator/aggregator.info 31 Aug 2006 20:22:34 -0000 1.1
+++ modules/aggregator/aggregator.info 1 Sep 2006 08:56:32 -0000
@@ -1,3 +1,4 @@
; $Id: aggregator.info,v 1.1 2006/08/31 20:22:34 dries Exp $
name = Aggregator
description = "Aggregates syndicated content (RSS, RDF, and Atom feeds)."
+package = Drupal core modules
Index: modules/block/block.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/block/block.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 block.info
--- modules/block/block.info 31 Aug 2006 20:22:34 -0000 1.1
+++ modules/block/block.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: block.info,v 1.1 2006/08/31 20:22:34 dries Exp $
name = Block
description = Controls the boxes that are displayed around the main content.
-
+package = Required modules
Index: modules/blog/blog.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/blog/blog.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 blog.info
--- modules/blog/blog.info 31 Aug 2006 20:22:34 -0000 1.1
+++ modules/blog/blog.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: blog.info,v 1.1 2006/08/31 20:22:34 dries Exp $
name = Blog
description = Enables keeping an easily and regularly updated web page or a blog.
-
+package = Drupal core modules
Index: modules/blogapi/blogapi.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/blogapi/blogapi.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 blogapi.info
--- modules/blogapi/blogapi.info 31 Aug 2006 20:22:34 -0000 1.1
+++ modules/blogapi/blogapi.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: blogapi.info,v 1.1 2006/08/31 20:22:34 dries Exp $
name = Blog API
description = Allows users to post content using applications that support XML-RPC blog APIs.
-
+package = Drupal core modules
Index: modules/book/book.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/book/book.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 book.info
--- modules/book/book.info 31 Aug 2006 20:22:34 -0000 1.1
+++ modules/book/book.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: book.info,v 1.1 2006/08/31 20:22:34 dries Exp $
name = Book
description = Allows users to collaboratively author a book.
-
+package = Drupal core modules
Index: modules/comment/comment.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/comment/comment.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 comment.info
--- modules/comment/comment.info 31 Aug 2006 20:22:35 -0000 1.1
+++ modules/comment/comment.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: comment.info,v 1.1 2006/08/31 20:22:35 dries Exp $
name = Comment
description = Allows users to comment on and discuss published content.
-
+package = Drupal core modules
Index: modules/contact/contact.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/contact/contact.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 contact.info
--- modules/contact/contact.info 31 Aug 2006 20:22:35 -0000 1.1
+++ modules/contact/contact.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: contact.info,v 1.1 2006/08/31 20:22:35 dries Exp $
name = Contact
description = Enables the use of both personal and site-wide contact forms.
-
+package = Drupal core modules
Index: modules/drupal/drupal.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/drupal/drupal.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 drupal.info
--- modules/drupal/drupal.info 31 Aug 2006 20:22:35 -0000 1.1
+++ modules/drupal/drupal.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: drupal.info,v 1.1 2006/08/31 20:22:35 dries Exp $
name = Drupal
description = Lets you register your site with a central server and improve ranking of Drupal projects by posting information on your installed modules and themes; also enables users to log in using a Drupal ID.
-
+package = Drupal core modules
Index: modules/filter/filter.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/filter/filter.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 filter.info
--- modules/filter/filter.info 31 Aug 2006 20:22:35 -0000 1.1
+++ modules/filter/filter.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: filter.info,v 1.1 2006/08/31 20:22:35 dries Exp $
name = Filter
description = Handles the filtering of content in preparation for display.
-
+package = Required modules
Index: modules/forum/forum.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/forum/forum.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 forum.info
--- modules/forum/forum.info 31 Aug 2006 20:22:35 -0000 1.1
+++ modules/forum/forum.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,5 @@
; $Id: forum.info,v 1.1 2006/08/31 20:22:35 dries Exp $
name = Forum
description = Enables threaded discussions about general topics.
-
+package = Drupal core modules
+dependencies = taxonomy comment
Index: modules/help/help.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/help/help.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 help.info
--- modules/help/help.info 31 Aug 2006 20:22:35 -0000 1.1
+++ modules/help/help.info 1 Sep 2006 08:56:32 -0000
@@ -1,3 +1,4 @@
; $Id: help.info,v 1.1 2006/08/31 20:22:35 dries Exp $
name = Help
description = Manages the display of online help.
+package = Drupal core modules
Index: modules/legacy/legacy.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/legacy/legacy.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 legacy.info
--- modules/legacy/legacy.info 31 Aug 2006 20:22:35 -0000 1.1
+++ modules/legacy/legacy.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: legacy.info,v 1.1 2006/08/31 20:22:35 dries Exp $
name = Legacy
description = Provides legacy handlers for upgrades from older Drupal installations.
-
+package = Drupal core modules
Index: modules/locale/locale.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/locale/locale.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 locale.info
--- modules/locale/locale.info 31 Aug 2006 20:22:35 -0000 1.1
+++ modules/locale/locale.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: locale.info,v 1.1 2006/08/31 20:22:35 dries Exp $
name = Locale
description = Enables the translation of the user interface to languages other than English.
-
+package = Drupal core modules
Index: modules/menu/menu.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/menu/menu.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 menu.info
--- modules/menu/menu.info 31 Aug 2006 20:22:35 -0000 1.1
+++ modules/menu/menu.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: menu.info,v 1.1 2006/08/31 20:22:35 dries Exp $
name = Menu
description = Allows administrators to customize the site navigation menu.
-
+package = Drupal core modules
Index: modules/node/node.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/node/node.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 node.info
--- modules/node/node.info 31 Aug 2006 20:22:35 -0000 1.1
+++ modules/node/node.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,5 @@
; $Id: node.info,v 1.1 2006/08/31 20:22:35 dries Exp $
name = Node
description = Allows content to be submitted to the site and displayed on pages.
+package = Required modules
Index: modules/path/path.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/path/path.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 path.info
--- modules/path/path.info 31 Aug 2006 20:22:35 -0000 1.1
+++ modules/path/path.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: path.info,v 1.1 2006/08/31 20:22:35 dries Exp $
name = Path
description = Allows users to rename URLs.
-
+package = Drupal core modules
Index: modules/ping/ping.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/ping/ping.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 ping.info
--- modules/ping/ping.info 31 Aug 2006 20:22:36 -0000 1.1
+++ modules/ping/ping.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: ping.info,v 1.1 2006/08/31 20:22:36 dries Exp $
name = Ping
description = Alerts other sites when your site has been updated.
-
+package = Drupal core modules
Index: modules/poll/poll.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/poll/poll.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 poll.info
--- modules/poll/poll.info 31 Aug 2006 20:22:36 -0000 1.1
+++ modules/poll/poll.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: poll.info,v 1.1 2006/08/31 20:22:36 dries Exp $
name = Poll
description = Allows your site to capture votes on different topics in the form of multiple choice questions.
-
+package = Drupal core modules
Index: modules/profile/profile.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/profile/profile.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 profile.info
--- modules/profile/profile.info 31 Aug 2006 20:22:36 -0000 1.1
+++ modules/profile/profile.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: profile.info,v 1.1 2006/08/31 20:22:36 dries Exp $
name = Profile
description = Supports configurable user profiles.
-
+package = Drupal core modules
Index: modules/search/search.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/search/search.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 search.info
--- modules/search/search.info 31 Aug 2006 20:22:36 -0000 1.1
+++ modules/search/search.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: search.info,v 1.1 2006/08/31 20:22:36 dries Exp $
name = Search
description = Enables site-wide keyword searching.
-
+package = Drupal core modules
Index: modules/statistics/statistics.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/statistics/statistics.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 statistics.info
--- modules/statistics/statistics.info 31 Aug 2006 20:22:36 -0000 1.1
+++ modules/statistics/statistics.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: statistics.info,v 1.1 2006/08/31 20:22:36 dries Exp $
name = Statistics
description = Logs access statistics for your site.
-
+package = Drupal core modules
Index: modules/system/admin.css
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/admin.css,v
retrieving revision 1.5
diff -u -F^f -r1.5 admin.css
--- modules/system/admin.css 1 Sep 2006 08:44:53 -0000 1.5
+++ modules/system/admin.css 1 Sep 2006 08:56:32 -0000
@@ -37,6 +37,15 @@
padding-right: 4px;
}
+div.admin-missing, div.admin-required {
+ font-size: 1.1em;
+ color: #444;
+}
+
+td.package {
+ font-weight: bold;
+}
+
/**
* Formatting for status report
*/
Index: modules/system/system.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 system.info
--- modules/system/system.info 31 Aug 2006 20:22:36 -0000 1.1
+++ modules/system/system.info 1 Sep 2006 08:56:32 -0000
@@ -1,4 +1,4 @@
; $Id: system.info,v 1.1 2006/08/31 20:22:36 dries Exp $
name = System
description = Handles general site configuration for administrators.
-
+package = Required modules
Index: modules/system/system.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.module,v
retrieving revision 1.361
diff -u -F^f -r1.361 system.module
--- modules/system/system.module 1 Sep 2006 08:44:53 -0000 1.361
+++ modules/system/system.module 1 Sep 2006 08:56:33 -0000
@@ -1214,25 +1214,94 @@ function system_themes_submit($form_id,
* Menu callback; displays a listing of all modules.
*/
function system_modules() {
- // Get current list of modules
+ // Get current list of modules.
$files = module_rebuild_cache();
+ // First Pass. Group packages and store module information.
foreach ($files as $filename => $file) {
$info = $file->info;
- $form['name'][$file->name] = array('#value' => $info['name']);
- $form['description'][$file->name] = array('#value' => t($info['description']));
- $options[$file->name] = '';
- if ($file->status) {
- $status[] = $file->name;
- }
- if ($file->throttle) {
- $throttle[] = $file->name;
+ // Store status and throttle so we can pull it out later.
+ $file->info['enabled'] = $file->status;
+ $file->info['throttle'] = $file->throttle;
+ if (!isset($file->info['package'])) {
+ $file->info['package'] = t('uncategorized');
+ }
+ $packages[$file->info['package']][$file->name] = $file->info;
+ $modules[$file->name] = $file->info;
+ }
+ // Store modules list for validation hook.
+ $form['modules'] = array('#type' => 'value', '#value' => $modules);
+
+ // Reorder packages.
+ $core_packages = array();
+ // Re-order packages to force core modules to the top.
+ foreach (array(t('Required modules'), t('Drupal core modules')) as $key) {
+ if (is_array($packages[$key])) {
+ $core_packages[$key] = $packages[$key];
+ unset($packages[$key]);
+ }
+ }
+ ksort($packages);
+ $packages = array_merge($core_packages, $packages);
+
+ // Second pass. Form building and dependency checking.
+ $form['reverse_deps'] = array('#type' => 'value', '#value' => array());
+ foreach ($packages as $package => $package_modules) {
+ $form['packages'][$package] = array('#value' => $package);
+ $form['packages'][$package]['modules'] = array('#type' => 'value', '#value' => array());
+ foreach ($package_modules as $filename => $info) {
+ $missing_deps = array();
+ $form['packages'][$package]['modules']['#value'][] = $filename;
+ $form['name'][$filename] = array('#value' => $info['name']);
+ $form['description'][$filename] = array('#value' => $info['description']);
+ $options[$filename] = '';
+ if ($info['enabled']) {
+ $status[$filename] = $filename;
+ }
+ if ($info['throttle']) {
+ $throttle[] = $filename;
+ }
+
+ // Check missing dependencies.
+ if (isset($info['dependencies'])) {
+ foreach (explode(' ', $info['dependencies']) as $dependency) {
+ if (!isset($modules[$dependency]) || !$modules[$dependency]['enabled']) {
+ // Store the fact we need to disable so the theme function can handle it.
+ $form['disabled'][$filename] = array('#type' => 'value', '#value' => 1);
+ $missing_deps[] = isset($modules[$dependency]) ? $modules[$dependency]['name'] : $dependency;
+ }
+ else if ($info['enabled']) {
+ // Store the fact we need to disable so the theme function can handle it.
+ $form['disabled'][$dependency] = array('#type' => 'value', '#value' => 1);
+ $form['reverse_deps']['#value'][$dependency][] = $info['name'];
+ }
+ }
+
+ // Add text for missing dependencies.
+ if (!empty($missing_deps)) {
+ $form['description'][$filename]['missing_deps'] = array(
+ '#value' => t('Missing dependencies: %missing_deps', array('%missing_deps' => implode(', ', $missing_deps))),
+ '#prefix' => '',
+ '#suffix' => '
',
+ );
+ }
+ }
}
}
- // Handle status checkboxes, including overriding the generated
- // checkboxes for required modules.
+ // Handle status checkboxes.
$form['status'] = array('#type' => 'checkboxes', '#default_value' => $status, '#options' => $options);
+
+ // Third pass. Add reverse dependency strings to description.
+ foreach ($form['reverse_deps']['#value'] as $filename => $dependency) {
+ $form['description'][$filename]['required'] = array(
+ '#value' => t('Required by: %required', array('%required' => implode(', ', $dependency))),
+ '#prefix' => '',
+ '#suffix' => '
',
+ );
+ }
+
+ // Allow overriding generated checkboxes for required modules.
$required = array('block', 'filter', 'node', 'system', 'user', 'watchdog');
foreach ($required as $require) {
$form['status'][$require] = array('#type' => 'hidden', '#value' => 1, '#suffix' => t('required'));
@@ -1254,24 +1323,52 @@ function system_modules() {
return $form;
}
-function theme_system_modules($form) {
- foreach (element_children($form['name']) as $key) {
- $row = array();
- $row[] = drupal_render($form['name'][$key]);
- $row[] = drupal_render($form['description'][$key]);
- $row[] = array('data' => drupal_render($form['status'][$key]), 'align' => 'center');
-
- if (module_exists('throttle')) {
- $row[] = array('data' => drupal_render($form['throttle'][$key]), 'align' => 'center');
+function system_modules_validate($form_id, $form_values, &$form) {
+ // Recheck values for submitted dependency errors.
+ foreach ($form_values['modules'] as $filename => $info) {
+ if (!isset($info['status']) && $form_values['status'][$filename] && !empty($info['dependencies'])) {
+ foreach (explode(' ', $info['dependencies']) as $dependency) {
+ if (!isset($form['status'][$dependency]) || !($form_values['status'][$dependency])) {
+ form_set_value($form['status'][$filename], FALSE);
+ form_set_error("status][$filename",
+ t('You are attempting to enable %module, but it depends on %dependency.',
+ array(
+ '%module' => $info['name'],
+ '%dependency' => isset($form_values['modules'][$dependency]) ? $form_values['modules'][$dependency]['name'] : $dependency
+ )));
+ }
+ }
}
- $rows[] = $row;
}
+}
+function theme_system_modules($form) {
$header = array(t('Name'), t('Description'), t('Enabled'));
if (module_exists('throttle')) {
$header[] = t('Throttle');
}
+ $columns = count($header);
+ foreach (element_children($form['packages']) as $package) {
+ $rows[] = array(array('data' => drupal_render($form['packages'][$package]), 'class' => 'package', 'colspan' => $columns));
+ foreach ($form['packages'][$package]['modules']['#value'] as $key) {
+ $row = array();
+ $row[] = drupal_render($form['name'][$key]);
+ $row[] = drupal_render($form['description'][$key]);
+ // Disable individual checkboxes.
+ if (isset($form['disabled'][$key])) {
+ $form['status'][$key]['#attributes'] = array('disabled' => 'disabled');
+ }
+
+ $row[] = array('data' => drupal_render($form['status'][$key]), 'align' => 'center');
+
+ if (module_exists('throttle')) {
+ $row[] = array('data' => drupal_render($form['throttle'][$key]), 'align' => 'center');
+ }
+ $rows[] = $row;
+ }
+ }
+
$output = theme('table', $header, $rows);
$output .= drupal_render($form);
return $output;
@@ -1282,8 +1379,11 @@ function system_modules_submit($form_id,
include_once './includes/install.inc';
$new_modules = array();
- // Enable/disable modules that have already been installed
- foreach ($edit['status'] as $key => $choice) {
+ // Merge in reverse deps since they should be enabled.
+ // They don't appear because disabled checkboxes are not submited
+ // by browsers. $modules = array_merge($edit['status'], $edit['reverse_deps']);
+ $modules = array_merge($edit['status'], $edit['reverse_deps']);
+ foreach ($modules as $key => $choice) {
if ($choice) {
if (drupal_get_installed_schema_version($key) == SCHEMA_UNINSTALLED) {
$new_modules[] = $key;
Index: modules/taxonomy/taxonomy.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/taxonomy/taxonomy.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 taxonomy.info
--- modules/taxonomy/taxonomy.info 31 Aug 2006 20:22:36 -0000 1.1
+++ modules/taxonomy/taxonomy.info 1 Sep 2006 08:56:33 -0000
@@ -1,4 +1,4 @@
; $Id: taxonomy.info,v 1.1 2006/08/31 20:22:36 dries Exp $
name = Taxonomy
description = Enables the categorization of content.
-
+package = Drupal core modules
Index: modules/throttle/throttle.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/throttle/throttle.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 throttle.info
--- modules/throttle/throttle.info 31 Aug 2006 20:22:36 -0000 1.1
+++ modules/throttle/throttle.info 1 Sep 2006 08:56:33 -0000
@@ -1,4 +1,4 @@
; $Id: throttle.info,v 1.1 2006/08/31 20:22:36 dries Exp $
name = Throttle
description = Handles the auto-throttling mechanism, to control site congestion.
-
+package = Drupal core modules
Index: modules/tracker/tracker.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/tracker/tracker.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 tracker.info
--- modules/tracker/tracker.info 31 Aug 2006 20:22:36 -0000 1.1
+++ modules/tracker/tracker.info 1 Sep 2006 08:56:33 -0000
@@ -1,4 +1,4 @@
; $Id: tracker.info,v 1.1 2006/08/31 20:22:36 dries Exp $
name = Tracker
description = Enables tracking of recent posts for users.
-
+package = Drupal core modules
Index: modules/upload/upload.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/upload/upload.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 upload.info
--- modules/upload/upload.info 31 Aug 2006 20:22:36 -0000 1.1
+++ modules/upload/upload.info 1 Sep 2006 08:56:33 -0000
@@ -1,4 +1,4 @@
; $Id: upload.info,v 1.1 2006/08/31 20:22:36 dries Exp $
name = Upload
description = Allows users to upload and attach files to content.
-
+package = Drupal core modules
Index: modules/user/user.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/user/user.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 user.info
--- modules/user/user.info 31 Aug 2006 20:22:37 -0000 1.1
+++ modules/user/user.info 1 Sep 2006 08:56:33 -0000
@@ -1,4 +1,4 @@
; $Id: user.info,v 1.1 2006/08/31 20:22:37 dries Exp $
name = User
description = Manages the user registration and login system.
-
+package = Required modules
Index: modules/watchdog/watchdog.info
===================================================================
RCS file: /cvs/drupal/drupal/modules/watchdog/watchdog.info,v
retrieving revision 1.1
diff -u -F^f -r1.1 watchdog.info
--- modules/watchdog/watchdog.info 31 Aug 2006 20:22:37 -0000 1.1
+++ modules/watchdog/watchdog.info 1 Sep 2006 08:56:33 -0000
@@ -1,4 +1,4 @@
; $Id: watchdog.info,v 1.1 2006/08/31 20:22:37 dries Exp $
name = Watchdog
description = Logs and records system events.
-
+package = Required modules