Is it possible to use nix module system within nixvim standalone?

[HeitorAugustoLN]

I want to create custom options within a nixvim standalone flake, so when it is consumed by my nixos configuration for example, i can customize it depending on the setup

[MattSturgeon]

Nixvim is built on the module system, so yes you can create your own options and define conditional config (etc).

If you wish to modify a standalone nixvim after the fact (e.g. in you nixos config), you can do this using the .extend function made available on the standalone derivation.

[HeitorAugustoLN]

That's nice! I would have to use .extend like this in my config?

{inputs, system, ...}: {
  inputs.nixvim-config.packages.${system}.default.extend {
    option = true;
  };

  home.packages = [inputs.nixvim-config.packages.${system}.default];
}

[MattSturgeon]

No, you could do:

{inputs, pkgs, ...}: {
  home.packages = [
    (inputs.nixvim-config.packages.${pkgs.stdenv.hostPlatform.system}.default.extend {
      option = true;
    })
  ];
}

Or:

{inputs, pkgs, ...}:
let
  inherit (pkgs.stdenv.hostPlatform) system;
  myNvim = inputs.nixvim-config.packages.${system}.default.extend {
    option = true;
  };
in
{
  home.packages = [ myNvim ];
}

[MattSturgeon]

Incidentally, you could also have your standalone nixvim within the same flake if you prefer. You'd just access it via self instead of inputs.

[HeitorAugustoLN]

Yeah, that makes more sense than the way I thought. Thank you!