anchor.diff:      fontconfig
       freetype
       glib
  -    gnome2.GConf
  -    gnome2.gdk_pixbuf
  -    gnome2.gtk
  -    gnome2.pango
  +    gnome3.gconf
  +    gdk_pixbuf
  +    gtk3
  +    pango
       libnotify
       libxcb
       nspr
  
positive.code: 
    inherit src;
  
    buildInputs = [ dpkg ];
    unpackPhase = "true";
    buildCommand = ''
      mkdir -p $out
  
negative.code:       patchelf --set-rpath ${rpath}:$out/lib/slack $file || true
      done
  
      # Replace the broken bin/slack symlink with a startup wrapper
      rm $out/bin/slack
      makeWrapper $out/lib/slack/slack $out/bin/slack \
        --prefix XDG_DATA_DIRS : $GSETTINGS_SCHEMAS_PATH
  
      # Fix the desktop link
      substituteInPlace $out/share/applications/slack.desktop \
  