gnome-keyring: add gcr dependency to service

gcr is used to provide the popup dialog, this fixes gnome-keyring for
non-gnome sessions

Changed files
+1 -1
nixos
modules
services
desktops
+1 -1
nixos/modules/services/desktops/gnome3/gnome-keyring.nix
···
environment.systemPackages = [ gnome3.gnome_keyring ];
-
services.dbus.packages = [ gnome3.gnome_keyring ];
+
services.dbus.packages = [ gnome3.gnome_keyring gnome3.gcr ];
};