home-manager/modules/programs/imv.nix

{
  config,
  lib,
  pkgs,
  ...
}:
let
  cfg = config.programs.imv;

  toConfig =
    attrs:
    ''
      # Generated by Home Manager.
    ''
    + lib.generators.toINI { } attrs;
in
{
  meta.maintainers = [ lib.maintainers.christoph-heiss ];

  options.programs.imv = {
    enable = lib.mkEnableOption "imv: a command line image viewer intended for use with tiling window managers";

    package = lib.mkPackageOption pkgs "imv" { nullable = true; };

    settings = lib.mkOption {
      default = { };
      type =
        with lib.types;
        attrsOf (
          attrsOf (oneOf [
            bool
            int
            str
          ])
        );
      description = ''
        Configuration options for imv. See
        {manpage}`imv(5)`.
      '';
      example = lib.literalExpression ''
        {
          options.background = "ffffff";
          aliases.x = "close";
        }
      '';
    };
  };

  config = lib.mkIf cfg.enable {
    assertions = [
      (lib.hm.assertions.assertPlatform "programs.imv" pkgs lib.platforms.linux)
    ];

    home.packages = lib.mkIf (cfg.package != null) [ cfg.package ];

    xdg.configFile = lib.mkIf (cfg.settings != { }) {
      "imv/config".text = toConfig cfg.settings;
    };
  };
}