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path: root/sys/seat/default.nix
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{
  config,
  lib,
  pkgs,
  ...
}:
with lib; let
  cfg = config.local.seat;

  users = filterAttrs (_: user: user.install) config.local.users;
in {
  options.local.seat = {
    enable = mkEnableOption "user seat";

    graphical = mkOption {
      type = types.bool;
      default = false;
    };

    wayland = mkOption {
      type = types.bool;
      default = true;
    };

    videoDrivers = mkOption {
      type = with types; listOf str;
    };
  };

  config =
    mkIf cfg.enable
    (mkMerge [
      {
        hardware = {
          acpilight.enable = true;
        };

        security.rtkit.enable = true;

        services = {
          pipewire = {
            enable = true;

            alsa = {
              enable = true;
              support32Bit = true;
            };

            jack.enable = true;
            pulse.enable = true;
            wireplumber.enable = true;
          };

          pulseaudio.enable = false;
        };

        users = {
          groups =
            mapAttrs (_: user: {inherit (user) gid;}) users
            // {
              adbusers.gid = 1008;
            };

          users =
            mapAttrs
            (username: user: {
              isNormalUser = true;

              inherit (user) uid;
              description = user.gecos;

              group = username;
              extraGroups = ["users"] ++ user.groups;

              shell =
                if user.allowLogin
                then pkgs.zsh
                else null;
            })
            users;
        };
      }
      (mkIf cfg.graphical {
        environment = {
          sessionVariables.NIXOS_OZONE_WL = "1";

          systemPackages = with pkgs; [
            qt5.qtwayland
            qt6.qtwayland
          ];
        };

        hardware.graphics.enable = true;

        programs = {
          dconf.enable = true;

          gtklock = {
            enable = true;

            config = {};
            modules = [];
          };
        };

        services = {
          libinput.enable = true;

          udev.packages = with pkgs; [
            pkgs.android-udev-rules
          ];

          xserver = mkIf (!cfg.wayland) {
            enable = true;
            videoDrivers = cfg.videoDrivers ++ ["modesetting" "fbdev"];
            displayManager.startx.enable = mkDefault true;
          };
        };

        xdg.portal = {
          enable = true;
          wlr.enable = true;
          extraPortals = [pkgs.xdg-desktop-portal-gtk];
          xdgOpenUsePortal = true;

          # warning: xdg-desktop-portal 1.17 reworked how portal implementations are loaded, you
          # should either set `xdg.portal.config` or `xdg.portal.configPackages`
          # to specify which portal backend to use for the requested interface.
          #
          # https://github.com/flatpak/xdg-desktop-portal/blob/1.18.1/doc/portals.conf.rst.in
          #
          # If you simply want to keep the behaviour in < 1.17, which uses the first
          # portal implementation found in lexicographical order, use the following:
          #
          # xdg.portal.config.common.default = "*";
          config.common.default = "*";
        };

        users.groups.adbusers.gid = 1008;
      })
    ]);
}