diff --git a/pkgs/tools/geo/gpx-layer/default.nix b/pkgs/tools/geo/gpx-layer/default.nix

index 3683dd22abc83d645904a416a233e1343bba1ba1..4b0fefd1e32de0726c58f352b7cc81f8efbb16ec 100644

--- a/pkgs/tools/geo/gpx-layer/default.nix

+++ b/pkgs/tools/geo/gpx-layer/default.nix

@@ -1,7 +1,7 @@

-{ lib, buildPerlPackage, XMLParser, sources }:

+{ stdenv, buildPerlPackage, shortenPerlShebang, XMLParser, sources }:

let

pname = "gpx-layer";

• date = lib.substring 0 10 sources.gpx-layer.date;

• date = stdenv.lib.substring 0 10 sources.gpx-layer.date;

version = "unstable-" + date;

in

buildPerlPackage {

@@ -10,18 +10,21 @@ src = sources.gpx-layer;

outputs = [ "out" ];

• nativeBuildInputs = stdenv.lib.optional stdenv.isDarwin shortenPerlShebang;

propagatedBuildInputs = [ XMLParser ];

• preConfigure = ''

• patchShebangs .

• touch Makefile.PL

• '';

• preConfigure = "touch Makefile.PL";

installPhase = ''

 install -Dm755 parse-gpx $out/bin/datamaps-parse-gpx

• '' + stdenv.lib.optionalString stdenv.isLinux ''

• patchShebangs $out/bin/datamaps-parse-gpx

• '' + stdenv.lib.optionalString stdenv.isDarwin ''

• shortenPerlShebang $out/bin/datamaps-parse-gpx

'';

• meta = with lib; {

• meta = with stdenv.lib; {

 inherit (sources.gpx-layer) description homepage;

 license = licenses.free;

 maintainers = with maintainers; [ sikmir ];