How to ignore dependenies of a specific package with a pipenv : <p>Is there any possibility to install a python package without dependencies with <code>pipenv</code> package manager? 
I'm looking for an analogue of <code>pip install package_name --no-dependencies</code> for the <code>Pipfile</code>. 
I already tried to specify with a marker but it raises an exception. </p>

<pre><code>[packages]
"psycopg2-binary" = "*"
"aiopg"={version = "*", markers="--no-dependencies"}
</code></pre>
