nixos-config/modules/desktop/gnome/default.nix

#
#  Gnome configuration
#
#  flake.nix
#   ├─ ./hosts
#   │   └─ ./laptop
#   │       └─ default.nix
#   └─ ./modules
#       └─ ./desktop
#           └─ ./gnome
#               └─ default.nix *
#
{ config, lib, user, pkgs, ... }:

{
    hardware.pulseaudio.enable = lib.mkForce false;

    environment.systemPackages = with pkgs; [
      gnome.gnome-terminal
      gnomeExtensions.dash-to-dock
      rocm-opencl-icd
      rocm-opencl-runtime
      clinfo
    ];

    services = {
      xserver = {
        enable = true;
        desktopManager.gnome.enable = true;
        displayManager = {
          gdm.wayland = true;
          gdm.enable = true;
          gdm.settings = {
        #      daemon = {
        #          AutomaticLoginEnable=true;
        #          AutomaticLogin="kabbone";
        #      };
              security = {
                  DisallowTCP=true;
              };
          };
          defaultSession = "steam-wayland";
          autoLogin.enable = true;
          autoLogin.user = "kabbone";
        };
      };
    };

#    systemd.services.gamescope-switcher = {
#      wantedBy = [ "graphical.target" ];
#      serviceConfig = {
#        User = 2000;
#        PAMName = "login";
#        WorkingDirectory = "~";
#  
#        TTYPath = "/dev/tty7";
#        TTYReset = "yes";
#        TTYVHangup = "yes";
#        TTYVTDisallocate = "yes";
#  
#        StandardInput = "tty-fail";
#        StandardOutput = "journal";
#        StandardError = "journal";
#  
#        UtmpIdentifier = "tty7";
#        UtmpMode = "user";
#  
#        Restart = "always";
#      };
#  
#      script = ''
#        set-session () {
#          mkdir -p ~/.local/state
#          >~/.local/state/steamos-session-select echo "$1"
#        }
#        consume-session () {
#          if [[ -e ~/.local/state/steamos-session-select ]]; then
#            cat ~/.local/state/steamos-session-select
#            rm ~/.local/state/steamos-session-select
#          else
#            echo "gamescope"
#          fi
#        }
#        while :; do
#          session=$(consume-session)
#          case "$session" in
#            plasma)
#              dbus-run-session -- gnome-shell --display-server --wayland
#              ;;
#            gamescope)
#              steam-session
#              ;;
#          esac
#        done
#      '';
#    };
}