anchor.diff:  { stdenv, lib, fetchFromGitHub, makeWrapper, cmake, pkgconfig
  -, boost, curl, expat, glew, libpng, tbb, wxGTK30
  +, boost, cereal, curl, expat, glew, libpng, tbb, wxGTK30
   , gtest, nlopt, xorg, makeDesktopItem
   }:
   let
  
positive.code: in
  stdenv.mkDerivation rec {
    pname = "prusa-slicer";
    version = "2.0.0";
  
    enableParallelBuilding = true;
  
  
negative.code:   # nixpkgs.
    buildInputs = [
      boost
      cereal
      curl
      expat
      glew
  