In reply to @crtified:crtified.me
https://gist.github.com/CRTified/69f83b3c1eef037413a400566e583cd3 Note that the externalModule.nix contains a function taking self which returns the usual module (which is a function in config, lib, ...)

In reply to @janik0:matrix.org
thank you for this ❤️

In reply to @crtified:crtified.me
Oh, if you need the proper name for that concept: It's a Closure - more obvious with the external module

In reply to @janik0:matrix.org
I'll look into that later. I gave myself the challenge of getting a deeper understating of the nix lang and nixos module system so I'm Implementing a dns libary a module which gives necessary meta information to generate something like a octodns config.

In reply to @janik0:matrix.org
I think this works, but I also need pass in the nixpkgs lib and the magic nixosModules config attribute somehow

In reply to @crtified:crtified.me
https://gist.github.com/CRTified/69f83b3c1eef037413a400566e583cd3

In reply to @crtified:crtified.me
Oh, if you need the proper name for that concept: It's a Closure - more obvious with the external module

In reply to @mib:kanp.ai
Nice idea! I hope you share it once you're done! :)

In reply to @janik0:matrix.org
I would try to avoid anything relying on a extra piece of infrastructure that is potentially a single point of failure so the whole proxy thing seems quite meh I find the approach https://github.com/snowfallorg/thaw is taking nice but I have to admit I didn't use it yet.

In reply to @antifuchs:asf.computer
Ooooh, that does look pretty excellent! I’m skeptical of the proxy approach too, and I even more dislike having transitive deps inject those into my system dependencies… so today I switched from Eza to lsd (:

    nixosConfigurations = {
      langhus = inputs.nixpkgs.lib.nixosSystem {
        inherit system;
        inherit pkgs;

        modules = [
          (import ./features/system/networking {
            options = {
              hostname = "langhus";
            };
          })
          ./features/system/bluetooth
          ./features/system/boot

{ lib, ... }:
{
  options = {
    hostname = lib.mkOption {
      type = lib.types.str;
      default = "langhus";
      description = "Hostname for the system";
    };
  };

  config = {
    networking.hostName = options.hostname;
    networking.networkmanager.enable = true;
  };
}

ah, well that's a simple issue. when you do import ./some/expr.nix { some = "options"; }, you first import ./some/expr.nix, which could be anything (in this case what you showed) and then you pass it the attribute set { some = "options"; }. If you really want to do what you're doing, you'd need

{ options }:
{ lib, ... }:
{
  networking.hostName = options.hostname;
  /* ... etc */
}

ah, well that's a simple issue. when you do import ./some/expr.nix { some = "options"; }, you first import ./some/expr.nix, which could be anything (in this case what you showed) and then you pass it the attribute set { some = "options"; }. If you really want to do what you're doing, you'd need

{ options }:
{ lib, ... }:
{
  networking.hostName = options.hostname;
  networking.networkmanager.enable = true;
}