No doublequotes around attribute name

[danbst]

I've got this error when trying to configure nginx module.

building all machine configurations...
error: The option `services.nginx.virtualHosts.content.defenders.com./' defined in `/home/deployer/testing/fleet/test.nix' does not exist.
(use ‘--show-trace’ to show detailed location information)

I think, this warning should include double-quotes around content.defenders.com, because it is defined as

    services.nginx.virtualHosts."content.defenders.com" = { ... };

And around / too

[vcunat]

The problem lies in <nixpkgs/lib/options.nix> and thus belongs into a different repo (best tag it nixos). There's simply

let
  showOption = concatStringsSep ".";