Drupal 11: Installing Or Uninstalling Modules Programmatically

The module_installer service can be used to do this.

To install a module:

 \Drupal::service('module_installer')->install(['ban']);

Or, uninstall a module:

 \Drupal::service('module_installer')->uninstall(['ban']);

This is useful in an update hook where you want to ensure that a module is not installed before the configuration is imported.

function mymodule_update_11001($sandbox = NULL) {
  \Drupal::service('module_installer')->uninstall(['ban']);
}

Useful when you have a configuration module installed and it's causing problems with altering the configuration input output streams. You can uninstall the module and remove its effects before importing the configuration.