Nixos config - distinguish between notebook vs desktop pc

Help
1

Which variable(s) could I use to distinguish between notebook vs desktop pc in the configuration of nixos

  • e.g. analog to variables/checks like lib.optional (system != "x86_64-linux") - which are derived from the device itself
2

Use distinct entry points for each system, then you can configure them independently, with shared config where necessary.

3 Likes
3

One alternative is to define your own NixOS option and use that throughout your other modules / configuration.nix.

  imports = [
    ./hardware-configuration.nix

    {
      options.local.machineType = lib.mkOption {
        type = lib.types.enum [ "desktop" "notebook" ];
        default = "desktop";
      };
    }
  ];

  local.machineType = "notebook";

  networking.hostName = "my-" + config.local.machineType;

Then you can use config.local.machineType as the “variable” in configuration.nix or other local nixos modules.

5 Likes