Rebuild packages with pulseaudio and fix GTK theme

modules/gui.nix

@@ -11,6 +11,7 @@
         enable = true;
         user = "coolneng";
       };
+      greeter.package = pkgs.lightdm_gtk_greeter;
     };
   };
 
@@ -34,12 +35,15 @@
       kitty
     ];
     extraSessionCommands = ''
+      export MOZ_DBUS_REMOTE=1
       export GRIM_DEFAULT_DIR=/home/coolneng/Photos/Screenshots
       export _JAVA_AWT_WM_NONREPARENTING=1
       export QT_QPA_PLATFORM=wayland
       export QT_WAYLAND_DISABLE_WINDOWDECORATION="1"
       export SDL_VIDEODRIVER=wayland
+      export GTK_THEME=Adapta-Eta
     '';
+    wrapperFeatures.gtk = true;
   };
 
   # Backlight
@@ -65,5 +69,8 @@
   programs.waybar.enable = true;
 
   # GPG agent
-  programs.gnupg.agent = { enable = true; };
+  programs.gnupg.agent = {
+    enable = true;
+    pinentryFlavor = "gnome3";
+  };
 }