Is it possible to ignore child dependencies in Composer config?
<p>When I run composer install, it will install all my "require" and the "require" of the other package.</p>

<p>My composer.json</p>

<pre><code>{
    "name": "my_app",
    "require": {
        "some/package": "0.0.0"
    }
}
</code></pre>

<p>The "child" dependency</p>

<pre><code>{
    "name": "some/package",
    "require": {
        "zendframework/zend-mail": "2.4.*@dev",
        "soundasleep/html2text": "~0.2",
        "mpdf/mpdf": "6.0.0",
        "endroid/qrcode": "1.*@dev"
    }
}
</code></pre>

<p>I know that it's possible ignore the php extensions, but what about these second require package?</p>