nixos/settings/desktop.nix

# settings/desktop.nix — display manager, lightweight fallback session, GTK/Qt theming
{ config, pkgs, lib, inputs, ... }:
{
  config = lib.mkIf (lib.elem config.networking.hostName [ "FredOS-Gaming" "FredOS-Macbook" ]) {
    services.xserver.enable = true;
    # GDM-style splash→session handoff: nothing else quits plymouth at boot;
    # greetd freezes the last splash frame (--retain-splash) right before it
    # spawns the isolated greeter compositor.
    systemd.services.plymouth-quit.wantedBy = lib.mkForce [ ];
    # ...and plymouth-quit-wait must go too: greetd is Type=idle, so it defers
    # its ExecStart while any job is pending — and the only pending job is
    # plymouth-quit-wait, which waits for the splash that greetd itself quits.
    # That circle only broke on systemd's 5s idle timeout, costing 6s of boot.
    systemd.services.plymouth-quit-wait.wantedBy = lib.mkForce [ ];
    systemd.services.greetd = {
      after = [ "plymouth-start.service" ];
      serviceConfig.ExecStartPre = "-${pkgs.plymouth}/bin/plymouth quit --retain-splash";
    };
    boot.plymouth.enable = true;
    boot.initrd.verbose = false;
    boot.consoleLogLevel = 3;
    boot.kernelParams = [ "quiet" "udev.log_level=3" ];

    # Flatpak for ad-hoc app installs via Bazaar
    services.flatpak.enable = true;

    # USB drives: no automount; udiskie posts "Device added" with a Mount
    # button (its default device_added action), then "Open" once mounted.
    services.udisks2.enable = true;

    # Secret Service for Chromium/Electron credential encryption.
    # greetd passes the login password to PAM before starting the session.
    services.gnome.gnome-keyring.enable = true;
    security.pam.services.greetd.enableGnomeKeyring = true;
    security.pam.services.login.enableGnomeKeyring = true;

    environment.systemPackages = with pkgs; [
      nemo                 # file manager
      cliamp               # terminal winamp
      gnome-themes-extra
      papirus-icon-theme
    ];

    # Cursor theme — stylix.cursor in settings/stylix.nix owns the choice.
    environment.sessionVariables = {
      XCURSOR_THEME = "Bibata-Modern-Ice";
      XCURSOR_SIZE = "24";
      XCURSOR_PATH = lib.mkForce [
        "${pkgs.bibata-cursors}/share/icons"
        "$HOME/.icons"
        "$HOME/.local/share/icons"
      ];
    };

    programs.xwayland.enable = true;
    programs.dconf.enable = true;

    home-manager.users.fred = {
      # Stylix's qt target only supports qtct; disable it to silence the warning.
      stylix.targets.qt.enable = false;
      # Minimal titlebars. The GTK stylesheet itself — stylix's colours plus
      # our headerbar shrink and surface-tint overrides — is rendered per
      # wallpaper and swapped at runtime in settings/theming.nix.
      gtk.enable = true;

      services.udiskie = {
        enable = true;
        automount = false;
        tray = "never";
        # "Open" button → yazi (Super+E's spelling; udiskie appends the path).
        settings.program_options.file_manager =
          "${pkgs.ghostty}/bin/ghostty +new-window --working-directory=/home/fred -e yazi";
      };

      dconf.settings."org/nemo/window-state".start-with-menu-bar = false;

      # GTK3 ignores dconf's color-scheme=prefer-dark — it only picks
      # adw-gtk3's gtk-dark.css when this setting is on. Without it GTK3 apps
      # (nemo) load the *light* sheet; the @define-color overrides repaint
      # most of it, but colours sass baked in as literals survive — e.g.
      # `messagedialog.csd.background button { color: rgba(0,0,6,0.8); }`, which
      # is why nemo's delete confirmation had near-black buttons on dark bg.
      gtk.gtk3.extraConfig.gtk-application-prefer-dark-theme = true;
    };
  };
}