gl2ps: make cmake a native build input

pkgs/development/libraries/gl2ps/default.nix

@@ -1,17 +1,27 @@
-{ stdenv, fetchurl, cmake
+{ stdenv
-, zlib, libGL, libGLU, libpng, freeglut }:
+, fetchurl
+, cmake
+, zlib
+, libGL
+, libGLU
+, libpng
+, freeglut
+}:
 
 stdenv.mkDerivation rec {
-  version = "1.4.2";
   pname = "gl2ps";
+  version = "1.4.2";
 
   src = fetchurl {
     url = "http://geuz.org/gl2ps/src/${pname}-${version}.tgz";
     sha256 = "1sgzv547h7hrskb9qd0x5yp45kmhvibjwj2mfswv95lg070h074d";
   };
 
-  buildInputs = [
+  nativeBuildInputs = [
     cmake
+  ];
+
+  buildInputs = [
     zlib
     libGL
     libGLU