title: How to install npm dependencies inside a sub directory?
body: <p>I have a <code>package.json</code> in the root: <code>"install": "cd packages/my-package &amp;&amp; yarn"</code>.</p>
  
  <p>When I run <code>yarn run install</code> all I'm asking is that it goes into this package, installs the <code>node_modules</code> and dependencies and that's it. For some reason no matter what I try (yarn workspaces/lerna/manually etc.) it is installing <code>node_modules</code> in all packages, including the root.</p>
  
  <p>WHY?! Just let me install them separately :(</p>
  
  <p>Anyone knows how to easily fix this?</p>