Dynamic Drush aliases

Dynamic Drush Alias script

<?php

$path = '/var/www';
$driver = 'mysql';
$port = '3306';
$host = '127.0.0.1';
$webroot = '';

$aliases = array();
$dir_handle = new DirectoryIterator($path);
while($dir_handle->valid()) {
  if($dir_handle->isDir() && !$dir_handle->isDot()) {
    $basename = $dir_handle->getBasename();
    $root = $dir_handle->getPathname();
    if(strlen($webroot) > 0) {
      $root .= '/' . $webroot;
    }
    if(file_exists($root . '/sites/default/default.settings.php')) {
      $aliases[$basename] = array(
        'uri' => 'http://localhost/' . $basename,
        'root' => $root,
        'databases' => array(
          'default' => array(
            'default' => array(
              'driver' => $driver,
              'username' => $basename . '_user',
              'password' => $basename . '_pass',
              'port' => $port,
              'host' => $host,
              'database' => $basename,
            ),
          ),
        ),
      );
    }
  }
  $dir_handle->next();
}

Sample Drush make config file

core = 7.x
api = 2

; Core
projects[drupal][version] = "7.34"
projects[drupal][type] = "core"

; Modules

projects[backup_migrate][subdir] = "contrib"
projects[backup_migrate][version] = "2.8"

projects[ctools][subdir] = "contrib"
projects[ctools][version] = "1.6"

projects[devel][subdir] = "contrib"
projects[devel][version] = "1.5"

projects[pathauto][subdir] = "contrib"
projects[pathauto][version] = "1.2"

projects[token][subdir] = "contrib"
projects[token][version] = "1.5"

projects[views][subdir] = "contrib"
projects[views][version] = "3.7"
projects[views][patch][2096013] = "https://www.drupal.org/files/issues/2096013-7.patch"

projects[wysiwyg][subdir] = "contrib"
projects[wysiwyg][version] = "2.2"

; Libraries
libraries[ckeditor][download][type] = "get"
libraries[ckeditor][download][url] = "http://download.cksource.com/CKEditor/CKEditor/CKEditor%203.6.6.1/ckeditor_3.6.6.1.tar.gz"
libraries[ckeditor][directory_name] = "ckeditor"

Sample Drush yaml make file

core: 7.x
api: 2

projects:
  drupal:
    version: 7.33

  backup_migrate:
    version: 2.8
    subdir: contrib

  ctools:
    version: 1.6
    subdir: contrib

  devel:
    version: 1.5
    subdir: contrib

  pathauto:
    version: 1.2
    subdir: contrib

  token:
    version: 1.5
    subdir: contrib

  views:
    version: 3.7
    subdir: contrib
    patch:
      - https://www.drupal.org/files/issues/2096013-7.patch

  wysiwyg:
    version: 2.2
    subdir: contrib

libraries:
  ckeditor:
    download:
      type: "file"
      url: "http://download.cksource.com/CKEditor/CKEditor/CKEditor%203.6.6.1/ckeditor_3.6.6.1.tar.gz"