NixOS setup

Following this post to use NextDNS with NixOS, I get a "This system is not using NextDNS" when looking at the dashboard. I have to add the `services.resolved` config as follows to get it working (i.e. see logs coming through):

```

services.resolved = {

enable = true;

extraConfig = ''

DNS=45.90.28.0#abcdef.dns.nextdns.io

DNS=2a07:a8c0::#abcdef.dns.nextdns.io

DNS=45.90.30.0#abcdef.dns.nextdns.io

DNS=2a07:a8c1::#abcdef.dns.nextdns.io

DNSOverTLS=yes

'';

};

```

Now the dashboard shows

```

Error while checking the current status.

Please talk to us if this problem persists after refreshing the page.

```

So I'm here :)

I think it's working. Just wanted to flag in case there's something I'm missing.

Thanks.