anchor.diff:      substitute usr/share/applications/bitwig-studio.desktop \
         $out/share/applications/bitwig-studio.desktop \
         --replace /usr/bin/bitwig-studio $out/bin/bitwig-studio
  +
  +      runHook postInstall
     '';
   
     postFixup = ''
  
positive.code:   ldLibraryPath = lib.strings.makeLibraryPath buildInputs;
  
    installPhase = ''
      mkdir -p $out/bin
      cp -r opt/bitwig-studio $out/libexec
      ln -s $out/libexec/bitwig-studio $out/bin/bitwig-studio
  
negative.code:       wrapProgram $f \
          "''${gappsWrapperArgs[@]}" \
          --prefix PATH : "${binPath}" \
          --suffix LD_LIBRARY_PATH : "${ldLibraryPath}"
      done
  
    '';
  