anchor.diff:  #  freepv = callPackage ../applications/graphics/freepv { };
   #
   #  xfontsel = callPackage ../applications/misc/xfontsel { };
  -#  inherit (xorg) xlsfonts;
   #
   #  freerdp = callPackage ../applications/networking/remote/freerdp {
   #    ffmpeg = ffmpeg_1;
  
positive.code: #  xchainkeys = callPackage ../tools/X11/xchainkeys { };
  #
  #  xchm = callPackage ../applications/misc/xchm { };
  #
  #  inherit (xorg) xcompmgr;
  #
  #  xdaliclock = callPackage ../tools/misc/xdaliclock {};
  #
  
negative.code: #
  #  xbase = callPackage ../development/libraries/xbase { };
  #
  #  xcb-util-cursor-HEAD = callPackage ../development/libraries/xcb-util-cursor/HEAD.nix { };
  #
  #  xdo = callPackage ../tools/misc/xdo { };
  