--- drush_make.drush.inc.orig	2009-11-14 16:20:30.000000000 -0600
+++ drush_make.drush.inc	2009-11-14 19:48:23.000000000 -0600
@@ -19,6 +19,12 @@ function drush_make_drush_command() {
     'bootstrap' => DRUSH_BOOTSTRAP_DRUSH,
   );
 
+  $items['generate_makefile'] = array(
+    'description' => 'Attempts to generate a makefile from the current drupal install.',
+    'callback' => 'drush_generate_makefile',
+    'bootstrap' => DRUSH_BOOTSTRAP_DRUPAL_FULL,
+  );
+
   return $items;
 }
 
@@ -29,7 +35,66 @@ function drush_make_drush_help($section)
   switch ($section) {
     case 'drush:make':
       return dt("@TODO: Print information on the format of the makefile here.");
+    case 'drush:generate_makefile':
+      return dt("This command attempts to generate a makefile from the current drupal install. It is imperfect in that it cannot always find the sources of various components.");
+  }
+}
+
+/**
+ * Drush callback; generate makefile from the current build.
+ */
+function drush_generate_makefile() {
+  // core section
+  print 'core = ' . DRUPAL_CORE_COMPATIBILITY . "\n";
+  // surely this is a given
+  print 'projects[] = drupal' . "\n";
+  print "\n";
+
+  // non-default profiles
+  $install_profile = variable_get('install_profile', '');
+  if ($install_profile != 'default' || $install_profile != '') {
+    print 'projects[' . $install_profile . '][type] = "profile"' . "\n";
+    print '; projects[' . $install_profile . '][download][type] = "DOWNLOADTYPE"' . "\n";
+    print '; projects[' . $install_profile . '][download][url] = "DOWNLOADURL"' . "\n";
+    print '; projects[' . $install_profile . '][download][branch] = "BRANCHNAME"' . "\n";
+    print "\n";
+  }
+
+  // enabled modules
+  $module_info = drush_get_modules();
+  //print_r($module_info);
+  foreach ($module_info as $module) {
+    // project name is required to be the same as module name to avoid listing out submodules
+    if ($module->info['project'] != 'drupal' 
+        && $module->info['project'] == $module->name 
+        && $module->status) {
+      print 'projects[] = ' . $module->name . "\n";
+    }
+  }
+  print "\n";
+
+  // get installed libraries if the libraries module is available
+  if (function_exists(libraries_get_libraries)) {
+    $libraries = libraries_get_libraries();
+    foreach ($libraries as $library_name => $library_path) {
+      $path = explode('/', $library_path);
+      print 'libraries[' . $library_name . '][download][type] = "get"' . "\n";
+      print 'libraries[' . $library_name . '][directory_name] = "' . $path[(count($path) - 1)] . '"' . "\n";
+      print 'libraries[' . $library_name . '][download][url] = "DOWNLOADURL"' . "\n";
+    }
+  }
+  print "\n";
+
+  // get custom themes
+  if (function_exists(_system_theme_data)) {
+    $theme_info = _system_theme_data();
+    foreach ($theme_info as $theme) {
+      if ($theme->info['project'] != 'drupal') {
+        print 'projects[] = ' . $theme->name . "\n";
+      }
+    }
   }
+
 }
 
 /**