nixos-generate-config suggests invalid Nix

[schuelermine]

Describe the bug

nixos-generate-config generates the following commented out invalid syntax:

  # Configure keymap in X11
  # services.xserver.layout = "us";
  # services.xserver.xkbOptions = {
  #   "eurosign:e";
  #   "caps:escape" # map caps to escape.
  # };

Perhaps = [ ... ] was intended?

Steps To Reproduce

Steps to reproduce the behavior:

1. nixos-generate-config
2. View configuration.nix

Metadata

Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

• system: "x86_64-linux"
• host os: Linux 5.15.102, NixOS, 22.11 (Raccoon), 22.11.3184.9b8e5abb183
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.11.1
• channels(root): "nixos-22.11.3184.9b8e5abb183"
• nixpkgs: /nix/var/nix/profiles/per-user/root/channels/nixos

[paumr]

Nice catch!
xkbOptions requires a comma separated string.

I submitted a PR which will fix this issue.