nixos/uwsm: remove dependency on services.displayManager (#489812)

Author: K900

nixos/modules/programs/wayland/uwsm.nix

@@ -116,14 +116,17 @@ in
       {
         environment.systemPackages = [ cfg.package ];
         systemd.packages = [ cfg.package ];
-        environment.pathsToLink = [ "/share/uwsm" ];
+        environment.pathsToLink = [
+          "/share/uwsm"
+          "/share/wayland-sessions"
+        ];
 
         # UWSM recommends dbus broker for better compatibility
         services.dbus.implementation = "broker";
       }
 
       (lib.mkIf (cfg.waylandCompositors != { }) {
-        services.displayManager.sessionPackages = lib.mapAttrsToList (
+        environment.systemPackages = lib.mapAttrsToList (
           name: value:
           mk_uwsm_desktop_entry {
             inherit name;