Atom proxy exceptions


I am running Atom in a corporate environment and need to configure its proxy settings. I’ve managed to run

apm config set http-proxy <user>:<password>@
apm config set https-proxy <user>:<password>@

But I get an ECONNREFUSED when trying to update or find packages.

With the corporate settings here I usually also have to set some proxy exceptions. Like -Dhttp.nonProxyHosts=* on Java programs.

Could this also be necessary and how would I do it for Atom?