anchor.diff:    deps =
       [ zlib glib libpng freetype xorg.libSM xorg.libICE xorg.libXrender
         xorg.libXrandr xorg.libXfixes xorg.libXcursor xorg.libXinerama
  -      xorg.libxcb fontconfig xorg.libXext xorg.libX11 alsaLib qt5.base libpulseaudio
  +      xorg.libxcb fontconfig xorg.libXext xorg.libX11 alsaLib qt55.qtbase libpulseaudio
       ];
   
     desktopItem = makeDesktopItem {
  
positive.code:   installPhase =
      ''
        # Delete unecessary libraries - these are provided by nixos.
        rm *.so.*
        rm qt.conf
  
        # Install files.
  
negative.code: { stdenv, fetchurl, makeWrapper, makeDesktopItem, zlib, glib, libpng, freetype
  , xorg, fontconfig, qt55, xkeyboard_config, alsaLib, libpulseaudio ? null
  , libredirect, quazip, less, which, unzip
  }:
  
  