title: Atom editor fails installing packages
body: <p>I'm trying to install packages in Atom editor, but it always fails, just like if I coudn't get a connexion to the server.</p>
  
  <p>For instance, <code>apm install split-diff</code> returns <code>Request for package information failed: getaddrinfo ENOTFOUND atom.io atom.io:443 (ENOTFOUND)</code></p>
  
  <p>I'm running Atom 1.32.2 on Linux Mint 19. 
  I don't use a proxy.</p>