workstation | enable greetd to start things up

workstation/configuration.nix

@@ -1,5 +1,15 @@
-{ config, pkgs, ... }:
-
+{ config, lib, pkgs, ... }:
+let
+  swayConfig = pkgs.writeText "greetd-sway-config" ''
+    # `-l` activates layer-shell mode. Notice that `swaymsg exit` will run after gtkgreet.
+    exec "${pkgs.greetd.gtkgreet}/bin/gtkgreet -l -c sway; swaymsg exit"
+    bindsym Mod4+shift+e exec swaynag \
+      -t warning \
+      -m 'What do you want to do?' \
+      -b 'Poweroff' 'systemctl poweroff' \
+      -b 'Reboot' 'systemctl reboot'
+  '';
+in
 {
   # Bootloader.
   boot.loader.systemd-boot.enable = true;
@@ -22,8 +32,24 @@
   # Select internationalisation properties.
   i18n.defaultLocale = "en_US.utf8";
 
+  services.greetd = {
+    enable = true;
+    settings = {
+      default_session = {
+        command = "${pkgs.sway}/bin/sway --config ${swayConfig}";
+      };
+    };
+  };
+
+  environment.etc."greetd/environments".text = ''
+    sway
+    fish
+    bash
+    startxfce4
+  '';
+
   # Splash screen
-  boot.plymouth.enable = false;
+  boot.plymouth.enable = true;
   boot.plymouth.theme = "breeze";
 
   security.polkit.enable = true;
@@ -39,10 +65,6 @@
   # Enable the X11 windowing system.
   #services.xserver.enable = false;
 
-  # Enable the GNOME Desktop Environment.
-  services.xserver.displayManager.gdm.enable = true;
-  services.xserver.displayManager.gdm.wayland = true;
-  #services.xserver.desktopManager.gnome.enable = false;
 
   # Configure keymap in X11
   #services.xserver = {