The option `services.xserver.desktopManager.plasma6' does not exist.

[sedrubal]

This might be a stupid question, but I'm new to nix. The README says:

Add this to your flake inputs and include the NixOS module in your config, then services.xserver.desktopManager.plasma6.enable = true.

I added this to my flake.nix:

{
  inputs = {
    # ...
    kde2nix.url = "github:nix-community/kde2nix/main";
  };
  outputs = inputs@{ self, kde2nix, ... }: {
  # ...
}

And this to my configuration.nix:

  # ...
  services.xserver.desktopManager = {
    plasma5 = {
      enable = true;
    };
    plasma6 = {
      enable = true;
    };
  };
  # ...

But while rebuilding, I get this error:

error:
       … while calling the 'seq' builtin

         at /nix/store/rzphaas2lw2d5376k9f619580hcn4niq-source/lib/modules.nix:320:18:

          319|         options = checked options;
          320|         config = checked (removeAttrs config [ "_module" ]);
             |                  ^
          321|         _module = checked (config._module);

       … while calling the 'throw' builtin

         at /nix/store/rzphaas2lw2d5376k9f619580hcn4niq-source/lib/modules.nix:296:18:

          295|                     ''
          296|             else throw baseMsg
             |                  ^
          297|         else null;

       error: The option `services.xserver.desktopManager.plasma6' does not exist. Definition values:
       - In `/nix/store/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx-source/configuration.nix':
           {
             enable = true;
           }

Am I missing something? Thank you!

[pongo1231]

You also need to import the module

imports = [
  inputs.kde2nix.nixosModules.default
];

[sedrubal]

Thanks for your quick answer. However, sorry for asking again, but now I get error: undefined variable 'inputs'. How do I get the variable inputs?

[pongo1231]

Pass the inputs to specialArgs in your flake.nix

specialArgs = { inherit inputs; };

and add inputs to the list of arguments at the top of your configuration.nix.

Alternatively you can also just import the module directly in the flake.nix.

[sedrubal]

Thank you, now it works.