anchor.diff:  
     nativeBuildInputs = [
       cmake
  -    copyDesktopItems
       pkg-config
       wrapGAppsHook
     ];
  
positive.code: , binutils
  , fetchFromGitHub
  , cmake
  , copyDesktopItems
  , makeDesktopItem
  , pkg-config
  , wrapGAppsHook
  , boost
  
negative.code:     ln -s "$out/share/PrusaSlicer/icons/PrusaSlicer-gcodeviewer_192px.png" "$out/share/pixmaps/PrusaSlicer-gcodeviewer.png"
    '';
  
    meta = with lib; {
      description = "G-code generator for 3D printer";
      homepage = "https://github.com/prusa3d/PrusaSlicer";
  