DEVELOPING.md

Prerequisites

• PHP 7.4 or later.
• Composer 2 or later. (Automatic Updates is not compatible with Composer 1.)
• Git must be installed.

Caveats

• Symbolic links are not currently supported by Package Manager. If the Drupal core checkout contains any symbolic links, tests will not work. By default, there shouldn't be any, but some may exist in certain situations (for example, if Drush or Drupal core's JavaScript dependencies have been installed). To scan for symbolic links, run find . -type l from the Drupal core repository root.

Step 1: Set up Drupal core

For development and running the module's tests, Automatic Updates assumes you are working from a Git clone of Drupal core. To set one up:

git clone https://git.drupalcode.org/project/drupal.git --branch 9.5.x auto-updates-dev
cd auto-updates-dev
composer config platform.php 7.4.0
composer install

Replace 9.5.x with the desired development branch of Drupal core. Be sure to point your web server to the auto-updates-dev directory, so you can access this code base in a browser.

Step 2: Clone Automatic Updates

Clone Automatic Updates' main development branch (8.x-2.x):

git clone --branch '8.x-2.x' https://git.drupalcode.org/project/automatic_updates.git ./modules/automatic_updates

Step 3: Install dependencies

From the Drupal repository root:

composer require php-tuf/composer-stager "symfony/config:^4.4 || ^6.1"
git reset --hard

Note: If you switch to a different branch of Drupal core and delete the vendor directory, you will need to do this step again after running composer install.