I confirm that...

• I searched the issue tracker and found no similar issues.

• I searched the documentation, FAQ, discussion board, and Google for solutions to my issue.

• I read the debugging guide and researched the issue to the best of my ability.

• My issue can be observed on the latest available commit of Doom.

• My issue can be observed on a stable release of Emacs (i.e. doesn't end in .50, .60, or .90–.99)

Describe your issue

The function +nix/lookup-option makes use of a nixos-options symbol that does not exist.

https://github.com/doomemacs/doomemacs/blob/master/modules/lang/nix/autoload.el#L48

Since I'm using corfu completion (and not company nor helm) the nixos-options package is not installed automatically.

https://github.com/doomemacs/doomemacs/blob/master/modules/lang/nix/packages.el

Manually installing the package and requiring it fixes the issue.

Steps to reproduce

Call +nix/lookup-option.

System information

N/A