diff --git a/pkgs/data/maps/qmapshack-routinodb/default.nix b/pkgs/data/maps/qmapshack-routinodb/default.nix

index 5415e61153fca4956f785d568843b7f666452f14..63b3e13b8dd1c1bae43849d0aca10c41b3231c01 100644

--- a/pkgs/data/maps/qmapshack-routinodb/default.nix

+++ b/pkgs/data/maps/qmapshack-routinodb/default.nix

@@ -1,8 +1,12 @@

{ stdenv, sources, routino }:

+let

• year = stdenv.lib.substring 0 2 sources.geofabrik-russia-nwfd.version;

• month = stdenv.lib.substring 2 2 sources.geofabrik-russia-nwfd.version;

• day = stdenv.lib.substring 4 2 sources.geofabrik-russia-nwfd.version;

+in

stdenv.mkDerivation {

pname = "qmapshack-routinodb";

• version = sources.geofabrik-russia-nwfd.version;

• version = "20${year}-${month}-${day}";

srcs = [

 sources.geofabrik-finland

 sources.geofabrik-estonia