= Host-specific configuration
:toc:

These are NixOS configurations that are specific to a machine (e.g., desktop, servers, VMs, containers, installation media).
Ideally, it should be made minimal as much as possible considering you also have to manage your users.




== Integrating with custom modules

The host configurations placed here most likely use the link:../modules/nixos[custom NixOS modules].
The custom modules shouldn't be imported manually from the host as this is already taken care of from the link:../flake.nix[flake definition].

It is best practice to assume the host configurations make use of the link:../modules/nixos[custom NixOS modules], link:../pkgs[custom packages], and the flake inputs.
In other words, always pay attention to link:../flake.nix[`../flake.nix`].




== User management

For managing users, there are multiple ways to manage them with this config:

* The usual `users.users.${user}` from system configuration (see `man configuration.nix.5`).

* If you intend to import users from the link:../users/nixos/[`../users/nixos/`], you can simply import them through `imports` in the system module.
+
--
For a convenient option, there is the function `getUser` defined from the link:../lib/private.nix[private custom library].
You can use it as follows:

[source, nix]
----
imports = [
  (lib.private.getUser "nixos" "foo-dogsquared")
  (lib.private.getUser "nixos" "polaski")
];
----
--

* You could also easily map link:../users/home-manager[one of my home-manager configurations] into one of the users for a NixOS system with `lib.mapHomeManagerUser` which accepts two arguments: a name from of the home-manager user folder and the user config as if configuration with `users.users.<name>`.
+
--
Here's an example to easily get my main home-manager config to be one of the users of the system.

[source, nix]
----
lib.mapHomeManagerUser "foo-dogsquared" {
  extraGroups = [ "audio" "docker" ];
  password = "what";
  createHome = true;
  home = "/home/foo-dogsquared";
}
----
--