{ config, inputs, ... }:
{
  flake.modules.nixos.walker = {
    home-manager.sharedModules = [ config.flake.modules.homeManager.walker ];

    nix.settings = {
      extra-substituters = [
        "https://walker.cachix.org"
        "https://walker-git.cachix.org"
      ];
      extra-trusted-public-keys = [
        "walker.cachix.org-1:fG8q+uAaMqhsMxWjwvk0IMb4mFPFLqHjuvfwQxE4oJM="
        "walker-git.cachix.org-1:vmC0ocfPWh0S/vRAQGtChuiZBTAe4wiKDeyyXM0/7pM="
      ];
    };
  };

  flake.modules.homeManager.walker =
    {
      config,
      lib,
      pkgs,
      ...
    }:
    let
      elephantPackages = inputs.walker.inputs.elephant.packages.${pkgs.stdenv.hostPlatform.system};
      # Upstream initializes rbw at startup. Drop this patch when it supports lazy vault access.
      providers = elephantPackages.elephant-providers.overrideAttrs (old: {
        patches = (old.patches or [ ]) ++ [ ./demand-driven-vault.patch ];
      });
      elephant = elephantPackages.elephant-with-providers.overrideAttrs (old: {
        installPhase =
          builtins.replaceStrings [ "${elephantPackages.elephant-providers}" ] [ "${providers}" ]
            old.installPhase;
      });
      walkerDefaults = builtins.fromTOML (builtins.readFile "${inputs.walker}/resources/config.toml");

      launcher = pkgs.writeShellApplication {
        name = "walker-launcher";
        runtimeInputs = [ pkgs.libressl.nc ];
        text = ''
          exec nc -U "$XDG_RUNTIME_DIR/walker/walker.sock"
        '';
      };
    in
    {
      imports = [ inputs.walker.homeManagerModules.default ];

      programs.elephant.package = elephant;

      desktop.commands.launcher = [ (lib.getExe launcher) ];
      programs.walker = {
        enable = true;
        runAsService = true;

        config.theme = "desktop";
        themes.desktop = {
          layouts.layout =
            lib.replaceStrings
              [ ''<property name="height-request">570</property>'' ]
              [ ''<property name="height-request">460</property>'' ]
              (builtins.readFile "${inputs.walker}/resources/themes/default/layout.xml");
          style = lib.mkBefore (
            builtins.readFile "${inputs.walker}/resources/themes/default/style.css"
            + ''
              .box-wrapper {
                padding: 10px;
                border-radius: 10px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
              }
              .search-container, .item-box, .preview { border-radius: 6px; }
              .input { padding: 8px 10px; }
              .item-box { padding: 5px 8px; }
              .large-icons { -gtk-icon-size: 24px; }
              .item-image-text { font-size: 24px; }
              .item-subtext { opacity: 0.75; }
              .item-quick-activation { padding: 3px 5px; }
              .keybinds { padding-top: 6px; }
              .keybind-bind { opacity: 0.65; }
            ''
          );
        };

        config.providers = {
          default = walkerDefaults.providers.default;
          prefixes = walkerDefaults.providers.prefixes ++ [
            {
              provider = "bitwarden";
              prefix = "?";
            }
          ];
        };
      };
    };
}