{
  config,
  pkgs,
  lib,
  ...
}:
with builtins // lib;
{
  imports = [
    ./files.nix
  ];

  options = {
    koreader = {
      flavor = mkOption {
        type =
          with types;
          nullOr
          <| enum [
            "kobo"
            "pocketbook"
          ];
        default = null;
      };
      basePackage = mkOption {
        type = types.package;
      };
      koreaderPath = mkOption {
        type = types.str;
      };
    };
  };

  config = mkMerge [
    (mkIf (config.koreader.flavor == "kobo") {
      koreader = {
        basePackage = mkOptionDefault pkgs.koreader-kobo;
        koreaderPath = mkOptionDefault ".adds/koreader";
      };
    })
    (mkIf (config.koreader.flavor == "pocketbook") {
      koreader = {
        basePackage = mkOptionDefault pkgs.koreader-pocketbook;
        koreaderPath = mkOptionDefault "applications/koreader";
      };
    })
  ];
}