anchor.diff:      mkdir -p $out
       dpkg -x $src $out
       cp -av $out/usr/* $out
  -    rm -rf $out/usr
  +    rm -rf $out/usr $out/share/lintian
   
       # Otherwise it looks "suspicious"
       chmod -R g-w $out
  
positive.code: 
      # Fix the desktop link
      substituteInPlace $out/share/applications/slack.desktop \
        --replace /usr/lib/slack/slack $out/lib/slack/slack
    '';
  
    meta = with stdenv.lib; {
  
negative.code:     libnotify
      nspr
      nss
      stdenv.cc.cc
      systemd
  
      xorg.libX11
  