nixos/wayland: add gtk portal to all applicable compositors (#342646)

nixos/modules/programs/wayland/cardboard.nix

@@ -19,6 +19,6 @@ in
       # To make a cardboard session available for certain DMs like SDDM
       services.displayManager.sessionPackages = [ cfg.package ];
     }
-    (import ./wayland-session.nix { inherit lib; })
+    (import ./wayland-session.nix { inherit lib pkgs; })
   ]);
 }

nixos/modules/programs/wayland/hyprland.nix

@@ -70,7 +70,7 @@ in
     }
 
     (import ./wayland-session.nix {
-      inherit lib;
+      inherit lib pkgs;
       enableXWayland = cfg.xwayland.enable;
       enableWlrPortal = lib.mkDefault false; # Hyprland has its own portal, wlr is not needed
     })

nixos/modules/programs/wayland/labwc.nix

@@ -20,6 +20,6 @@ in
       # To make a labwc session available for certain DMs like SDDM
       services.displayManager.sessionPackages = [ cfg.package ];
     }
-    (import ./wayland-session.nix { inherit lib; })
+    (import ./wayland-session.nix { inherit lib pkgs; })
   ]);
 }

nixos/modules/programs/wayland/miracle-wm.nix

@@ -30,11 +30,12 @@ in
       }
 
       (import ./wayland-session.nix {
-        inherit lib;
+        inherit lib pkgs;
         # Hardcoded path in Mir, not really possible to disable
         enableXWayland = true;
         # No portal support yet: https://github.com/mattkae/miracle-wm/issues/164
         enableWlrPortal = false;
+        enableGtkPortal = false;
       })
     ]
   );

nixos/modules/programs/wayland/river.nix

@@ -56,7 +56,7 @@ in
     }
 
     (import ./wayland-session.nix {
-      inherit lib;
+      inherit lib pkgs;
       enableXWayland = cfg.xwayland.enable;
     })
   ]);

nixos/modules/programs/wayland/sway.nix

@@ -148,7 +148,7 @@ in
     }
 
     (import ./wayland-session.nix {
-      inherit lib;
+      inherit lib pkgs;
       enableXWayland = cfg.xwayland.enable;
     })
   ]);

nixos/modules/programs/wayland/wayfire.nix

@@ -63,7 +63,7 @@ in
           };
         }
         (import ./wayland-session.nix {
-          inherit lib;
+          inherit lib pkgs;
           enableXWayland = cfg.xwayland.enable;
         })
       ]

nixos/modules/programs/wayland/wayland-session.nix

@@ -1,7 +1,9 @@
 {
   lib,
+  pkgs,
   enableXWayland ? true,
   enableWlrPortal ? true,
+  enableGtkPortal ? true,
 }:
 
 {
@@ -18,6 +20,9 @@
   services.graphical-desktop.enable = true;
 
   xdg.portal.wlr.enable = enableWlrPortal;
+  xdg.portal.extraPortals = lib.mkIf enableGtkPortal [
+    pkgs.xdg-desktop-portal-gtk
+  ];
 
   # Window manager only sessions (unlike DEs) don't handle XDG
   # autostart files, so force them to run the service