anchor.diff:  { stdenv, lib, fetchFromGitHub, makeWrapper, which, cmake, perl, perlPackages,
     boost, tbb, wxGTK30, pkgconfig, gtk3, fetchurl, gtk2, libGLU,
  -  glew, eigen, curl, gtest, nlopt, pcre, xorg }:
  +  glew, eigen, curl, gtest, nlopt, pcre, xorg, makeDesktopItem }:
   let
     AlienWxWidgets = perlPackages.buildPerlPackage rec {
       name = "Alien-wxWidgets-0.69";
  
positive.code:     repo = "Slic3r";
      sha256 = "046ircwc0wr586v7106ys557ypslmyq9p4qgi34ads1d6bgxhlyy";
      rev = "version_${version}";
    };
  
    meta = with stdenv.lib; {
  
negative.code:     mkdir -p $out/bin/var
      cp -r ../resources/icons/* $out/bin/var/
      cp -r ../resources $out/bin/
  
  
      mkdir -p "$out/share/pixmaps/"
      ln -s "$out/bin/var/Slic3r.png" "$out/share/pixmaps/slic3r-prusa.png"
      mkdir -p "$out/share/applications"
      cp "$desktopItem"/share/applications/* "$out/share/applications/"
    '';
  
    src = fetchFromGitHub {
  