Undefined index: drupal dans update_requirements()

[B-Prod]

The function update_requirements() check for the "drupal" project, which does not exists since "pressflow" is used instead.

Awaiting a specific URL for checking update status (@see pressflow/6#30) is created, it could be great to avoid the display or update error message by modifying the update module.

I actually have a patch against Pressflow to avoid such issue, but text (or patch) file are not allowed here :(

[B-Prod]

OK, I got it now. Here is the patch:

diff --git a/modules/update/update.compare.inc b/modules/update/update.compare.inc
index 6e0c5fe..ef75124 100644
--- a/modules/update/update.compare.inc
+++ b/modules/update/update.compare.inc
@@ -68,6 +68,9 @@ function update_get_projects() {
         _update_process_info_list($projects, $module_data, 'module', FALSE);
         _update_process_info_list($projects, $theme_data, 'theme', FALSE);
       }
+      // Do not check for Pressflow release while a dedicated URL does not exist.
+      // @see https://github.com/pressflow/6/issues/30
+      unset($projects['pressflow']);
       // Allow other modules to alter projects before fetching and comparing.
       drupal_alter('update_projects', $projects);
       // Cache the site's project data for at most 1 hour.
@@ -168,7 +171,7 @@ function _update_process_info_list(&$projects, $list, $project_type, $status) {
     // or theme. If the project name is 'drupal', we don't want it to show up
     // under the usual "Modules" section, we put it at a special "Drupal Core"
     // section at the top of the report.
-    if ($project_name == 'drupal') {
+    if ($project_name == 'pressflow') {
       $project_display_type = 'core';
     }
     else {
@@ -182,7 +185,7 @@ function _update_process_info_list(&$projects, $list, $project_type, $status) {
     }
     // Add a list of sub-themes that "depend on" the project and a list of base
     // themes that are "required by" the project.
-    if ($project_name == 'drupal') {
+    if ($project_name == 'pressflow') {
       // Drupal core is always required, so this extra info would be noise.
       $sub_themes = array();
       $base_themes = array();
@@ -252,7 +255,7 @@ function update_get_project_name($file) {
     $project_name = $file->info['project'];
   }
   elseif (isset($file->info['package']) && (strpos($file->info['package'], 'Core') === 0)) {
-    $project_name = 'drupal';
+    $project_name = 'pressflow';
   }
   return $project_name;
 }
diff --git a/modules/update/update.install b/modules/update/update.install
index baf4953..3907c07 100644
--- a/modules/update/update.install
+++ b/modules/update/update.install
@@ -31,10 +31,6 @@ function update_requirements($phase) {
     if ($available = update_get_available(FALSE)) {
       module_load_include('inc', 'update', 'update.compare');
       $data = update_calculate_project_data($available);
-      // First, populate the requirements for core:
-      $requirements['update_core'] = _update_requirement_check($data['drupal'], 'core');
-      // We don't want to check drupal a second time.
-      unset($data['drupal']);
       if (!empty($data)) {
         // Now, sort our $data array based on each project's status. The
         // status constants are numbered in the right order of precedence, so