Example: settings for local environnement.
Create the local settings file : local.services.yml the add to local settings.php file

# Local service config
$settings['container_yamls'][] = DRUPAL_ROOT . '/sites/default/local.services.yml';

Step 1 : Add the package cweagans/composer-patches
composer require cweagans/composer-patches

Doc : https://www.drupal.org/docs/drupal-apis/form-api/conditional-form-fields

States that can be applied to a form field element:

Add following packages to composer.json file next to drupal repository

Edit bashrc file (~/.bashrc)