How to apply patch to Drupal core using Composer

README.md

3 steps to patch Drupal core with Composer

Make sure your composer.json has cweagans/composer-patches package.

1. Update composer.json

"extra": {
    "patches": {
        "drupal/core": {
            "<patch1 information>": "<patch1 file path>",
            "<patch2 information>": "<patch2 file path>"
        }
     }
}

2. Apply your patch

composer install

3. Update composer.lock

composer update --lock

Useful links

• Drupal.org Groups post: https://groups.drupal.org/node/518975
• Composer plugin: https://github.com/cweagans/composer-patches