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