Common Errors

This section lists some common errors and their possible solutions.

Conditional Imports

If for some reason you need to perform an import inside the Denix module, then attempting to set [nixos|home|darwin].[ifEnabled|ifDisabled].imports will cause an infinite recursion error.

This means that if you need to import, for example, a third-party library, you should first add it to [nixos|home|darwin].always.imports, and then, if necessary, set option values in [nixos|home|darwin].[always|ifEnabled|ifDisabled].

Discussion on "Conditional module imports": discourse.nixos.org

Incorrect Code

{delib, ...}:
delib.module {
  name = "wrong";
  options = delib.singleEnableOption true;

  nixos.ifEnabled = {
    imports = [<someModule>];

    someModuleOptions.enable = true;
  };
}

Correct Code

{delib, ...}:
delib.module {
  name = "correct";
  options = delib.singleEnableOption true;

  nixos.always.imports = [<someModule>];

  nixos.ifEnabled.someModuleOptions.enable = true;
}