lib/tests/modules/functionTo/merging-list.nix


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{ lib, config, ... }:
let
  inherit (lib) types;
in {
  options = {
    fun = lib.mkOption {
      type = types.functionTo (types.listOf types.str);
    };

    result = lib.mkOption {
      type = types.str;
      default = toString (config.fun {
        a = "a";
        b = "b";
        c = "c";
      });
    };
  };

  config.fun = lib.mkMerge [
    (input: [ input.a ])
    (input: [ input.b ])
  ];
}