pantheon.gala: Backport Wayland menu commit

gala-daemon actually needs a correct environment for `AppInfo.launch_default_for_uri`.

nixos/modules/services/x11/desktop-managers/pantheon.nix

@@ -190,22 +190,6 @@ in
         "org.gnome.SettingsDaemon.XSettings.service"
       ];
 
-      # https://github.com/elementary/gala/issues/1826#issuecomment-1890461298
-      systemd.user.services."io.elementary.gala.daemon@" = {
-        unitConfig = {
-          Description = "Gala Daemon";
-          BindsTo = "io.elementary.gala@.service";
-          After = "io.elementary.gala@.service";
-        };
-
-        serviceConfig = {
-          Type = "dbus";
-          BusName = "org.pantheon.gala.daemon";
-          ExecStart = "${pkgs.pantheon.gala}/bin/gala-daemon";
-          Slice = "session.slice";
-        };
-      };
-
       # Global environment
       environment.systemPackages = (with pkgs.pantheon; [
         elementary-session-settings

nixos/tests/pantheon.nix

@@ -50,7 +50,7 @@ import ./make-test-python.nix ({ pkgs, lib, ...} :
             machine.wait_until_succeeds(f"pgrep -f {i}")
         for i in ["gala", "io.elementary.wingpanel", "plank"]:
             machine.wait_for_window(i)
-        for i in ["io.elementary.gala.daemon@x11.service", "bamfdaemon.service", "io.elementary.files.xdg-desktop-portal.service"]:
+        for i in ["bamfdaemon.service", "io.elementary.files.xdg-desktop-portal.service"]:
             machine.wait_for_unit(i, "${user.name}")
 
     with subtest("Check if various environment variables are set"):

pkgs/desktops/pantheon/desktop/gala/default.nix

@@ -1,6 +1,7 @@
 { lib
 , stdenv
 , fetchFromGitHub
+, fetchpatch
 , nix-update-script
 , pkg-config
 , meson
@@ -39,6 +40,13 @@ stdenv.mkDerivation rec {
     # We look for plugins in `/run/current-system/sw/lib/` because
     # there are multiple plugin providers (e.g. gala and wingpanel).
     ./plugins-dir.patch
+
+    # Start gala-daemon internally (needed for systemd managed gnome-session)
+    # https://github.com/elementary/gala/pull/1844
+    (fetchpatch {
+      url = "https://github.com/elementary/gala/commit/351722c5a4fded46992b725e03dc94971c5bd31f.patch";
+      hash = "sha256-RvdVHQjCUNmLrROBZTF+m1vE2XudtQZjk/YW28P/vKc=";
+    })
   ];
 
   nativeBuildInputs = [
@@ -70,9 +78,6 @@ stdenv.mkDerivation rec {
   postPatch = ''
     chmod +x build-aux/meson/post_install.py
     patchShebangs build-aux/meson/post_install.py
-
-    # https://github.com/elementary/gala/issues/1826#issuecomment-1890461298
-    sed '2i Wants=io.elementary.gala.daemon@.service' -i 'data/gala@x11.service.in'
   '';
 
   passthru = {