di.php

<?php

function factory($path, ...$args) {
    $callback = require $path . '.php';
    if (!$callback instanceof Closure) {
        return $callback;
    }

    return $callback(...$args);
}

/**
 * Usage
 * 
 * Whre you need the dependency:
 * $filesystem = factory('flysystem/filesystem', __DIR__);
 * 
 * in file flysystem/filesystem.php:
 * <?php
 * 
 * use League\Flysystem\Adapter\Local;
 * use League\Flysystem\Filesystem;
 * 
 * return function($path) {
 *     return new Filesystem(new Local($path));
 * };
 */