Nix Options – A set of useful Emacs modes and functions for users of Nix and Nix OS.

nixos-options	helm-nixos-options	company-nixos-options

Usage

helm-nixos-options

The function helm-nixos-options is the one that you want to bind. You are free to choose where and if you want it global you can have this.

(global-set-key (kbd "C-c C-S-n") 'helm-nixos-options)

It looks like this

The description of the option is shown in the minibuffer

If you want more information, there is a detailed buffer when you press return

There are also other actions like inserting the current match into the buffer

company-nixos-options

Add company-nixos-options to allowed company-mode backends list

(add-to-list 'company-backends 'company-nixos-options)

For now it shows the documentation of the option in a popup-buffer.