Question about this line.

[SLGShark6]

infra/modules/flake-parts/host-machines.nix

Line 27 in f4cfd5a

modules = module.imports ++ [

I've been learning nix and have been trying to do a setup between my personal machines and servers. I've been attempting to do a dendritic pattern using your (and other's) configs as reference.

One thing about your config that confuses me is, this line doesn't import the actual contents of the host module like this:

...
modules = [ module ] ++ module.imports or [] ++ [
  inputs.home-manager.nixosModules.home-manager
  {
    home-manager.extraSpecialArgs = specialArgs;
  }
];
...

Is it not supposed to import the module here? Does this happen elsewhere in the codebase? How does nixosSystem read the host config then?

Thank you in advance for clarifying. Documentation for all these things is a bit scarce... and not so verbose as one would hope. Really appreciate any help in clearing things up for me. I feel like I'm a bit lost (even coming from 8+ years of development and CLI based system administration).

[drupol]

Hello,

I updated the line and replace module.imports with module. I tested and it doesn't change a thing in my config (0bf1fe2). It is also done in a similar way in the Unify framework (https://codeberg.org/quasigod/unify/src/commit/860b5ac977988b57b4fca57e33ac0f4ef7b8af7f/modules/nixos.nix#L84).

I honestly do not remember why I did that initially... but I found it better now :)
Perhaps someone who has a deep understanding of the Nix module system will explain that better than me.

[SLGShark6]

Haha understandable, thanks for replying! Appreciate you linking me to the unify project. Honestly unify looks like something I'll end up using.

I think the biggest thing for me is creating a mental map between flake-parts, flakes and regular nixos modules, and not getting confused between the 3. I want to get a good understanding of the main concepts, but feels like a bit harder with my reading so far. Maybe I'm just looking in the wrong places (or I don't know what I'm looking for just yet)

[drupol]

I'm still evaluating Unify at #84, I really like it :)

[SLGShark6]

I was actually trying to write something similar to what it does, but unsuccessfully... Getting weird errors all along the way. So hopefully this project will help with my education.