Robo task for updating Drupal 8 module config

RoboFile.php

<?php

class RoboFile extends \Robo\Tasks
{

	/**
	 * Update site config by importing from a module's config directory.
	 *
	 * @param string $module Module name
	 * @param array $opts
	 *
	 * @return \Robo\Result
	 */
	public function configUpdate( $module, $opts = [ 'yes|y' => false ] ) {
		$get_module_path = 'drush pmi ' . $module . ' --format=csv --fields=path';
		$get_source      = '$(' . $get_module_path . ')/config/install';

		$y = $opts['yes'] ? ' --yes' : '';

		return $this->taskExec( 'drush cim' . $y . ' --partial --source=' . $get_source )
		            ->dir( 'web' )
		            ->run();
	}
}

Usage:

robo config:update my_module