fix(nixos): issue with systemd xdg-desktop-portal-gtk missing vars

nix/nixos/sway/config

@@ -404,14 +404,16 @@ for_window [class="^.*$"] focus
 # Inhibit swayidle when watching videos on fullscreen
 for_window [class="^.*"] inhibit_idle fullscreen
 
-### Start auxiliar services
-#
-# Start blueman-applet
-# Since it depends on $DISPLAY it must be started after sway
-exec zsh -c "blueman-applet &"
-
 # Autotiling for sway
 # To make the UX a bit more like yabai
 exec_always autotiling -w 1 3 5 7 9 -sr 1.61
 
+## FIX for nixos after 24.11 that makes xdg-desktop-portal-gtk not work
+# This caused any application that depends on gtk to take 20s to open, like dolphin
+exec systemctl --user import-environment \
+         DISPLAY \
+         WAYLAND_DISPLAY \
+         XDG_SESSION_TYPE \
+         XDG_CURRENT_DESKTOP &
+
 include @sysconfdir@/sway/config.d/*

nix/nixos/windows-manager.nix

@@ -33,6 +33,18 @@
     ];
   };
 
+  ## NOTE On Nixos 24.11, there was an issue with loading xdg-desktop-portal-gtk
+  # which failed to load on demand, because of missing "DISPLAY" variable.
+  # This caused applications to take up to 20 seconds to load.
+  # See sway/config:412 for extra configuration to fix this issue.
+  xdg.portal = {
+    enable = true;
+
+    # Expected by xdg-desktop-portal
+    wlr.enable = true;
+    extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
+  };
+
   # Allow applying the same settings to outside of X11
   console.useXkbConfig = true;