nixpkgs/pkgs/desktops/pantheon/desktop/elementary-default-settings/overrides/plank-dockitems.gschema.override

[net.launchpad.plank.dock.settings]
dock-items=['gala-multitaskingview.dockitem','org.gnome.Epiphany.dockitem','org.gnome.Geary.dockitem','io.elementary.calendar.dockitem','io.elementary.music.dockitem','io.elementary.videos.dockitem','io.elementary.photos.dockitem','io.elementary.switchboard.dockitem']